Jam Sport Block mod
I know a few people on here have Focus ST's
Have you seen the thread on FSTOC regarding this mod?
Its a £1000 mod that stops you cracking liners on your ST once you start modding your ST over 300bhp.
But Jam sport are refusing to tell you what the mod is, would you pay a grand for this not having the first clue what there doing?
Have you seen the thread on FSTOC regarding this mod?
Its a £1000 mod that stops you cracking liners on your ST once you start modding your ST over 300bhp.
But Jam sport are refusing to tell you what the mod is, would you pay a grand for this not having the first clue what there doing?
Can't blame them really as they would never make any money if they gave away their secrets.
I'm sure there are plenty of other tuners that will also know how to stop this from happening, start looking around in the Volvo world
I'm sure there are plenty of other tuners that will also know how to stop this from happening, start looking around in the Volvo world
Being a st owner ive looked into this and tbh i can see both sides ! as a customer its always nice to see where your money is going BUT on the supplier side why give the info out to be copied when you have done all the development !
there is another company that sell a brace that fits between the block an liners maybe its that
there is another company that sell a brace that fits between the block an liners maybe its that
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There is a thread on STOC going full swing but you have to be a paid up member to see it. I've been posting on it and speculation is rife as to what exactly JamSport do. There is another known alternative to their block mod by fitting Darton Liners. I've seen a website the supply and fit for £1400 inc VAT. JamSport's block mod is £850+VAT so it can't really be the Darton Liner mod. Whatever it is, they will not reveal anything.
As far as I am concerned, until they produce some sort of testing that they have done, with figures as to what limits they have tested engines to, then I will stay sceptical.
As far as I am concerned, until they produce some sort of testing that they have done, with figures as to what limits they have tested engines to, then I will stay sceptical.
There is a thread on STOC going full swing but you have to be a paid up member to see it. I've been posting on it and speculation is rife as to what exactly JamSport do. There is another known alternative to their block mod by fitting Darton Liners. I've seen a website the supply and fit for £1400 inc VAT. JamSport's block mod is £850+VAT so it can't really be the Darton Liner mod. Whatever it is, they will not reveal anything.
As far as I am concerned, until they produce some sort of testing that they have done, with figures as to what limits they have tested engines to, then I will stay sceptical.
As far as I am concerned, until they produce some sort of testing that they have done, with figures as to what limits they have tested engines to, then I will stay sceptical.
It happened on the previous thread JamSport put up earlier in the year also. I can see it from both views though, you are paying £1000 for what exactly? A block mod, something added to strengthen the block, magic liner fairies, who knows. On the other hand, I can see why JamSport are reluctant to publish detailed information but it is a bit difficult to sell something which hasn't got a proven track record, without some sort of physical testing or figures to show it was tested to such and such stress levels, for so many cycles, this is how much fatigue it suffered etc and no failure.
I for one am not interested in it at all as I will never be running silly power levels and have a small crumb of comfort in that I have a 2009 facelift which "apparently" shouldn't be affected so I don't want to piss on JamSport's parade
I for one am not interested in it at all as I will never be running silly power levels and have a small crumb of comfort in that I have a 2009 facelift which "apparently" shouldn't be affected so I don't want to piss on JamSport's parade
The ST block is essentially a volvo 850 block which has been around for years
All the volvo boys discovered the block weakness some 15 years ago
There are two options for block strengthening
Darton Sleeves / or similar liner replacement
Drill and insert alloy pegs around the top part of the liner to stop it flexing under load
I do have pictures on my home computor so will see if I can upload them later on
the 2.0 and 2.3 blocks are 71mm bore so are stronger due to thicker walls
Its the 2.4 and 2.5's that suffer the most issues as they are the same block just overbored
All Jamsport are doing is re-inventing the wheel
Nothing new / secret - Its just new to the Ford Scene
All the volvo boys discovered the block weakness some 15 years ago
There are two options for block strengthening
Darton Sleeves / or similar liner replacement
Drill and insert alloy pegs around the top part of the liner to stop it flexing under load
I do have pictures on my home computor so will see if I can upload them later on
the 2.0 and 2.3 blocks are 71mm bore so are stronger due to thicker walls
Its the 2.4 and 2.5's that suffer the most issues as they are the same block just overbored
All Jamsport are doing is re-inventing the wheel
Nothing new / secret - Its just new to the Ford Scene
Last edited by AustenW; May 31, 2012 at 11:36 AM.
This is something else that is a bit of a mystery but apparently facelift cars from 2008 on had revised/different blocks or there are some reports it is the same block as the RS. Personally, I haven't a clue if any of it is true or rubbish but mine will never run more than 300bhp (famous last words). There are PLENTY of cars pushing circa 300bhp and done so for many miles with no issues which FAR FAR outweigh the number who have suffered cracked liners. There was a dodgy batch run in 2007 at some point with cars that cracked liners even on standard engines.
Last edited by pani_k; May 31, 2012 at 03:57 PM.
This is something else that is a bit of a mystery but apparently facelift cars from 2008 on had revised/different blocks or there are some reports it is the same block as the RS. Personally, I haven't a clue if any of it is true or rubbish but mine will never run more than 300bhp (famous last words). There are PLENTY of cars pushing circa 300bhp and done so for many miles with no issues which FAR FAR outweigh the number who have suffered cracked liners. There was a dodgy badge run in 2007 at some point with cars that cracked liners even on standard engines.
Yep. A few people on the STOC know what it is but they're full on clowns who spend all day nut hugging the tuners and won't say what it is.
Tell you what i will undercut jamsport i will do a block mod for £500 it will take me 3 mins to do you dont have to take your engine out you just have to close your eyes while i do it cause its a secret.
Any takers?
Any takers?
Quote from Jamsport.
After many people asking what the Block Mod entails, we have put together a brief outlay for you all.
Firstly we time the engine prior to removing the head, Once the head is removed we frstly check the head for any distortion and if required we would machine it.
We then prepare the block by cleaning all surfaces.
We then install our modification to the the block to prevent the weakness' in the liners, on completion of this, we then replace the head using a new head gasket and new head bolts.
We then torque down the head to the manufacturer's recommended settings.
We re-time the engine using manufacturer's timing tools.
Once this has been completed, we then run the car upto temperature, checking for any leaks, then the car is removed from the ramp to perform a road test.
The time for this modification is approx 10-12 hours, and can be performed in one day.
As for the exact details to what we do once the head is removed, you will have to excuse us not revealing the complete details in full. We have spent alot of time,money and engines developing this. So we do apoligise.
"It's a bit like the Colonel revealing his chicken recipe" not everything is given away
This modification has been performed on many ST's now, with cars running power from 300bhp upto 400 bhp, and we are confident we have found the solution to the cracked liner issue's that can accur.
If there are people wishing to take there cars even futher, then we do offer a alternative to the Darton liners, which is installed to our own demo RS, using a ST block and is currently running over 500bhp.
The price for the ST block mod is £850 + VAT.
After many people asking what the Block Mod entails, we have put together a brief outlay for you all.
Firstly we time the engine prior to removing the head, Once the head is removed we frstly check the head for any distortion and if required we would machine it.
We then prepare the block by cleaning all surfaces.
We then install our modification to the the block to prevent the weakness' in the liners, on completion of this, we then replace the head using a new head gasket and new head bolts.
We then torque down the head to the manufacturer's recommended settings.
We re-time the engine using manufacturer's timing tools.
Once this has been completed, we then run the car upto temperature, checking for any leaks, then the car is removed from the ramp to perform a road test.
The time for this modification is approx 10-12 hours, and can be performed in one day.
As for the exact details to what we do once the head is removed, you will have to excuse us not revealing the complete details in full. We have spent alot of time,money and engines developing this. So we do apoligise.
"It's a bit like the Colonel revealing his chicken recipe" not everything is given away
This modification has been performed on many ST's now, with cars running power from 300bhp upto 400 bhp, and we are confident we have found the solution to the cracked liner issue's that can accur.
If there are people wishing to take there cars even futher, then we do offer a alternative to the Darton liners, which is installed to our own demo RS, using a ST block and is currently running over 500bhp.
The price for the ST block mod is £850 + VAT.
Put it this way, Robbie's car (red DS modded ST) has been running 300+bhp for a long time now gone down the DS Turbo X route which is 330-350bhp and it hasn't gone boom and gets used on track and driven properly. As I said the number of cars that have actually suffered cracked liners are few and far between although since they will all converge on such forums, you will hear the stories of cracked liners being thrown around. IMO buy and enjoy.
The ST block is essentially a volvo 850 block which has been around for years
All the volvo boys discovered the block weakness some 15 years ago
There are two options for block strengthening
Darton Sleeves / or similar liner replacement
Drill and insert alloy pegs around the top part of the liner to stop it flexing under load
I do have pictures on my home computor so will see if I can upload them later on
the 2.0 and 2.3 blocks are 71mm bore so are stronger due to thicker walls
Its the 2.4 and 2.5's that suffer the most issues as they are the same block just overbored
All Jamsport are doing is re-inventing the wheel
Nothing new / secret - Its just new to the Ford Scene
All the volvo boys discovered the block weakness some 15 years ago
There are two options for block strengthening
Darton Sleeves / or similar liner replacement
Drill and insert alloy pegs around the top part of the liner to stop it flexing under load
I do have pictures on my home computor so will see if I can upload them later on
the 2.0 and 2.3 blocks are 71mm bore so are stronger due to thicker walls
Its the 2.4 and 2.5's that suffer the most issues as they are the same block just overbored
All Jamsport are doing is re-inventing the wheel
Nothing new / secret - Its just new to the Ford Scene
no there not there a s40 or a c30r engine which are 25 mm shorter in hight an 65mm less in length , its a 9.1,1 comp racio rather than 8.5.1 on the volvo ! they might look the same but theres more differences but i cant be arsed to go into it but general idea is your pushing your luck above 350 bhp because the compression is to high but using darton liners witha lower comp forged piston kit then 500+bhp is easy but tbh mines 320 bhp 390lb an thats plenty on a road car being fwd
Depending on what plate it is on and what engine code I think it was some made on a 57 plate iirc.
Put it this way, Robbie's car (red DS modded ST) has been running 300+bhp for a long time now gone down the DS Turbo X route which is 330-350bhp and it hasn't gone boom and gets used on track and driven properly. As I said the number of cars that have actually suffered cracked liners are few and far between although since they will all converge on such forums, you will hear the stories of cracked liners being thrown around. IMO buy and enjoy.
Put it this way, Robbie's car (red DS modded ST) has been running 300+bhp for a long time now gone down the DS Turbo X route which is 330-350bhp and it hasn't gone boom and gets used on track and driven properly. As I said the number of cars that have actually suffered cracked liners are few and far between although since they will all converge on such forums, you will hear the stories of cracked liners being thrown around. IMO buy and enjoy.
If it is a good example of an st then I shall be buying mate, and will deffo be enjoying it
Depending on what plate it is on and what engine code I think it was some made on a 57 plate iirc.
Put it this way, Robbie's car (red DS modded ST) has been running 300+bhp for a long time now gone down the DS Turbo X route which is 330-350bhp and it hasn't gone boom and gets used on track and driven properly. As I said the number of cars that have actually suffered cracked liners are few and far between although since they will all converge on such forums, you will hear the stories of cracked liners being thrown around. IMO buy and enjoy.
Put it this way, Robbie's car (red DS modded ST) has been running 300+bhp for a long time now gone down the DS Turbo X route which is 330-350bhp and it hasn't gone boom and gets used on track and driven properly. As I said the number of cars that have actually suffered cracked liners are few and far between although since they will all converge on such forums, you will hear the stories of cracked liners being thrown around. IMO buy and enjoy.
no there not there a s40 or a c30r engine which are 25 mm shorter in hight an 65mm less in length , its a 9.1,1 comp racio rather than 8.5.1 on the volvo ! they might look the same but theres more differences but i cant be arsed to go into it but general idea is your pushing your luck above 350 bhp because the compression is to high but using darton liners witha lower comp forged piston kit then 500+bhp is easy but tbh mines 320 bhp 390lb an thats plenty on a road car being fwd
Depending on what plate it is on and what engine code I think it was some made on a 57 plate iirc.
Put it this way, Robbie's car (red DS modded ST) has been running 300+bhp for a long time now gone down the DS Turbo X route which is 330-350bhp and it hasn't gone boom and gets used on track and driven properly. As I said the number of cars that have actually suffered cracked liners are few and far between although since they will all converge on such forums, you will hear the stories of cracked liners being thrown around. IMO buy and enjoy.
Put it this way, Robbie's car (red DS modded ST) has been running 300+bhp for a long time now gone down the DS Turbo X route which is 330-350bhp and it hasn't gone boom and gets used on track and driven properly. As I said the number of cars that have actually suffered cracked liners are few and far between although since they will all converge on such forums, you will hear the stories of cracked liners being thrown around. IMO buy and enjoy.


brilliant cars
Ditto. They made a hash of a mates RS Turbo and were superbly helpful when we were looking at Go-Tech right up until we purchased it then the knowledge and help dried up and all they were interested in was trying to sell us their stuff as apparently it was the only way to achieve the goal we were aiming for. Once they discovered we weren't going to be conned into parting with sums of money for kit we didn't need the correspondance dried up completely.
Anyone want to buy a new Go-Tech setup, never been fitted?
Anyone want to buy a new Go-Tech setup, never been fitted?
Last edited by Oranoco; May 31, 2012 at 03:36 PM.
But jams port are in all the magazines and do wondeful stuff to the staff cars
It must be some disgruntled ex employee that is tarnishing their reputation surely as I can't believe that yet ANOTHER tuning company with big magazine presence is not all its cooked up to be
It must be some disgruntled ex employee that is tarnishing their reputation surely as I can't believe that yet ANOTHER tuning company with big magazine presence is not all its cooked up to be
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Only dealing's I've had with Jamsport was when I enquired about putting a 24v v6 scorpio motor in a sierra(only rang them cos TopBoss was too far for me). The guy on the phone had never heard of a 24v before and said he'd have to ask the boss and he'd call me back. Never called back. Got the feeling that they were just not interested because it was not an RS Turbo enquiry. As said above, they do create some stunning cars, and quick one's at that.
I think some people are missing the point.
How much to do a head gasket AT A GARAGE on a ST ???
Gotta be getting on for £500-£600 surely????
10 hours of labour at £50+vat an hour is £600 quid so it's obviously not an expensive modification in terms of actual materials....... still gotta take the head off though to do it.
Sounds like Jamsport aren't allowed to make a profit/make any money/charge what they want in todays day and age because someone on the internet doesn't like it.
I wonder how many people are running cosworth YB's with windage trays - how do you know? Have you checked they're there?
Or.... X Y or Z part thats fitted internally to an engine or so on......
The world wont be happy until no one earns a living and we all use our mates to fix our cars because it's cheaper and he read how to do it on the internet.
Honestly if you don't trust Jamsport or their mod don't have it done or go for the more expensive and dare I say it BETTER??? option for an extra £400....... sounds simple to me.
How much to do a head gasket AT A GARAGE on a ST ???
Gotta be getting on for £500-£600 surely????
10 hours of labour at £50+vat an hour is £600 quid so it's obviously not an expensive modification in terms of actual materials....... still gotta take the head off though to do it.
Sounds like Jamsport aren't allowed to make a profit/make any money/charge what they want in todays day and age because someone on the internet doesn't like it.
I wonder how many people are running cosworth YB's with windage trays - how do you know? Have you checked they're there?
Or.... X Y or Z part thats fitted internally to an engine or so on......
The world wont be happy until no one earns a living and we all use our mates to fix our cars because it's cheaper and he read how to do it on the internet.
Honestly if you don't trust Jamsport or their mod don't have it done or go for the more expensive and dare I say it BETTER??? option for an extra £400....... sounds simple to me.
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Is there a reason that they don't use the same method done to subaru open deck blocks? Basically metal sections are inserted right round the liners to make it closed deck?
True a five pot head gasket change ain't cheap! I ran 312 brake no problems and pulled like a train I a early block! They as differences in all the blocks and compressions. I heard Mazda either built some or developed some











