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Old 04-08-2008, 10:25 PM
  #201  
glancy2081
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mark are you presuming that the preasure is stretching the head bolts causing the gasket to fail
Old 04-08-2008, 10:25 PM
  #202  
rapidcossie
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Originally Posted by Chip
I believe so, as im sure Mark said a cometic and I dont think they do two gas ring options for a YB.

Will be intresting to see what it looks like when he strips the engine.
Old 04-08-2008, 10:25 PM
  #203  
TiB
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When i had mountune long studs every one of them stretched and i was running considerably less power/torque/cyl pressers than you guys are.
Old 04-08-2008, 10:26 PM
  #204  
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Originally Posted by Chip
The problem with those seems to be keeping them reliable on the road, they just dont seem to seal well long term.
They do use a sealer as well on the water filled blocks,they aren't fitted "dry"

puddy
Old 04-08-2008, 10:27 PM
  #205  
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Originally Posted by TiB
When i had mountune long studs every one of them stretched and i was running considerably less power/torque/cyl pressers than you guys are.

funny that Lee, as Mountune told me they had never seen any stretching before even tho there are stretched sets at AVA now.
Old 04-08-2008, 10:28 PM
  #206  
Mark Shead
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Originally Posted by glancy2081
mark are you presuming that the preasure is stretching the head bolts causing the gasket to fail
This is the most likely cause of the first gasket problem due to the pcp starting to lift it, I saw marks indicating this on all cyl on the first gasket but it was the rear section that failed first.

Mark
Old 04-08-2008, 10:30 PM
  #207  
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Originally Posted by rapidcossie
Was it a Phuzion gasket Chip?
Yes it was this was a easy to get hold of option, I will know tomorrow how it failed.

Mark
Old 04-08-2008, 10:31 PM
  #208  
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Originally Posted by Mark Shead
Yes it was this was a easy to get hold of option, I will know tomorrow how it failed.

Mark

Stick some pics up if you can Mark

Im using this gasket and would be nice to know its limits.
Old 04-08-2008, 10:33 PM
  #209  
glancy2081
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Originally Posted by Mark Shead
This is the most likely cause of the first gasket problem due to the pcp starting to lift it, I saw marks indicating this on all cyl on the first gasket but it was the rear section that failed first.

Mark
mark i know of ways to accuretly measure the length of the bolts which would tell you if the bolts had stretched leading to failure
Old 04-08-2008, 10:35 PM
  #210  
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Originally Posted by glancy2081
mark i know of ways to accuretly measure the length of the bolts which would tell you if the bolts had stretched leading to failure

You can see the difference by eye on the ones I had in my engine, no need for exect measurements.
Old 04-08-2008, 10:35 PM
  #211  
Chip
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Originally Posted by glancy2081
mark i know of ways to accuretly measure the length of the bolts which would tell you if the bolts had stretched leading to failure
Only if you had measured them before as well surely?
Old 04-08-2008, 10:35 PM
  #212  
TiB
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Originally Posted by rapidcossie
funny that Lee, as Mountune told me they had never seen any stretching before even tho there are stretched sets at AVA now.
I only had 6 but once out of the block and measured each one was a different length.
Old 04-08-2008, 10:37 PM
  #213  
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Originally Posted by glancy2081
mark i know of ways to accuretly measure the length of the bolts which would tell you if the bolts had stretched leading to failure
They are only stretching under full power which then leads to the gasket problem, First this was caused by to much ign on high octane race fuel which led to the gasket failing,
I will know tomorrow if this is the same with the other gasket but I think its just a gasket fault now but will know soon.

Mark
Old 04-08-2008, 10:38 PM
  #214  
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Originally Posted by Chip
Only if you had measured them before as well surely?
yes chip these have to be measured once the head is torqued down and take a before and after reading presuming mark suffers another failure was thinking more for in the future chip
Old 04-08-2008, 10:52 PM
  #215  
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Would the regular HD Cometics be any use ?

Cylinder monitoring, link and prices taken from an EFI Forum member who contacted them. US Dollars.
http://www.tfxengine.com/


LCS Products Description List Price (USD)
LCS2
Data acquisition system - hardware and software supports crank sensor and 2 FiO
combustion sensors $2,995.00
LCS4
Data acquisition system - hardware and software supports crank sensor, 1 FiO
combustion sensor and up to 3 FiO intake/exhaust sensors $2,995.00
DBS Products Description List Price (USD)
DBSBasic5
Data acquisition system - hardware and software supports crank sensor and up to
5 FiO pressure sensors of any type $3,995.00
DBSBasicK5
Data acquisition system - hardware and software supports crank sensor and up to
5 pressure sensors of any type $4,495.00
DBSBasic7 Data acquisition system - hardware and software supports crank sensor and up to
7 FiO pressure sensors of any type
$4,620.00
DBSBasicK7 Data acquisition system - hardware and software supports crank sensor and up to
7 pressure sensors of any type
$5,120.00
DBSMax8
Data acquisition system - hardware and software supports crank sensor and up to
8 pressure sensors of any type - suitable for F1 engine speeds $7,180.00
DBSMax16
Data acquisition system - hardware and software supports crank sensor and up to
16 pressure sensors of any type - suitable for F1 engine speeds Request Quote
DBSMax16
Data acquisition system - hardware and software supports crank sensor and up to
24 pressure sensors of any type - suitable for F1 engine speeds Request Quote
ICS Products Description List Price (USD)
ICS2
Self-contained, self-powered data acquisition system - hardware and software
supports crank sensor and 2 FiO combustion sensors (motorcycle version) $3,800.00
ICS2
Self-contained, self-powered data acquisition system - hardware and software
supports crank sensor and 2 FiO combustion sensors $4,325.00
ICS4
Self-contained, self-powered data acquisition system - hardware and software
supports crank sensor and up to 4 FiO pressure sensors of any type $7,650.00
ICS8
Self-contained, self-powered data acquisition system - hardware and software
supports crank sensor and up to 8 FiO pressure sensors of any type $8,225.00
Sensors Description List Price (USD)
Combustion Head Mounted Sensor $1,000.00
Combustion Head Mounted Sensor (spanning water jacket) $1,075.00
Combustion Glowplug Mounted Sensor $1,095.00
Combustion Sparkplug Mounted Sensor Request Quote
Intake/Exhaust
Dynamic High Speed Dynamic Sensor $975.00
Intake/Exhaust Average Pressure Sensor $275.00
Piezoelectric /
Piezoresistive Laboratory type sensor Request Quote
Miscellaneous Description List Price (USD)
Custom Software Addition of custom features to the analysis software starting at $175
Hardware Options Various upon request
Example Purchase - LCS4 + 1 Combustion Sensor = $3995 plus shipping"

Not that bad I guess ??

No doubt the failures are sudden incidents. But have you considered, or do you monitor cooling system pressure, that might alert of an impending failure ?
Old 05-08-2008, 07:12 AM
  #216  
Martin-Hadland
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Rod/Mark,

Are you using Mountune supplied long studs, or another make?
Old 05-08-2008, 07:30 AM
  #217  
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is it not simply a case of needing to retorque after an hours running?
Old 05-08-2008, 07:36 AM
  #218  
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What was the new inlet manifold that was tried? Given that this gave an instand 50bhp, that is more interesting to me, as it is pretty obvious (despite the armchair experts ), that Mark has a handle on this .
Old 05-08-2008, 08:11 AM
  #219  
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The new manifold is a cast side fed one (well bottom but fed via a dotted slit), it looks at a glance like a modified standard one.
Old 05-08-2008, 08:11 AM
  #220  
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Originally Posted by Mike Rainbird
What was the new inlet manifold that was tried? Given that this gave an instand 50bhp, that is more interesting to me, as it is pretty obvious (despite the armchair experts ), that Mark has a handle on this .
The manifold was the type Danny from ABC has on his car..
Old 05-08-2008, 08:15 AM
  #221  
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Any pictures?
Old 05-08-2008, 08:24 AM
  #222  
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Originally Posted by Mike Rainbird
Any pictures?
I don't have any but had a look and was discussing it with Danny at Combe.. He will have some though.
Old 05-08-2008, 08:26 AM
  #223  
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Only downside is you would need to change your spring settings on that corner of the car, its not exactly lightweight
Old 05-08-2008, 08:27 AM
  #224  
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Originally Posted by Chip
Only downside is you would need to change your spring settings on that corner of the car, its not exactly lightweight

Is the casting quite thick then?
Old 05-08-2008, 08:29 AM
  #225  
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Originally Posted by martin-reyland
Is the casting quite thick then?
Yes mate, its a substantial bit of kit.

Its a little rough around the edges, and some of the machining on the O-ring groove on the one Mark used wasnt really fabulously well done, but fundamentally its a pretty good design IMHO

Its also been tested with 4 EGT sensors on an engine to ensure the distribution is acceptable, and came out fine in that test too (DTW in harlow did it IIRC)
Old 05-08-2008, 08:31 AM
  #226  
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Originally Posted by Chip
Yes mate, its a substantial bit of kit.

Its a little rough around the edges, and some of the machining on the O-ring groove on the one Mark used wasnt really fabulously well done, but fundamentally its a pretty good design IMHO

Its also been tested with 4 EGT sensors on an engine to ensure the distribution is acceptable, and came out fine in that test too (DTW in harlow did it IIRC)
Cool, I did think that it looks a lot like Karls one that's been fitted to his 3dr for ages.
Old 05-08-2008, 08:32 AM
  #227  
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could you not use a modified rs200 one as they seem to look like they will do the job easy
Old 05-08-2008, 08:34 AM
  #228  
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Originally Posted by jacko
could you not use a modified rs200 one as they seem to look like they will do the job easy
I dont see why you would want to modify an rs200 plenum at all if using it, I certainly havent.

How the hell would you fit it in a sierra though mate?

Ive got on my nova, which is fine cause I have the clearance for it, but I dont see how you would get one into a cosworth bay personally?
Old 05-08-2008, 08:37 AM
  #229  
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Originally Posted by Chip
I dont see why you would want to modify an rs200 plenum at all if using it, I certainly havent.

How the hell would you fit it in a sierra though mate?

Ive got on my nova, which is fine cause I have the clearance for it, but I dont see how you would get one into a cosworth bay personally?
Are you stupid Chip? The answer is clear... No need for a sun strip just fit a huge intercooler along the top of the front screen and boost pipes up the A pillars
Old 05-08-2008, 08:39 AM
  #230  
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well for a strt the intake is on top which is no good and without having them both sat infront of me i dont pretend to know what would need to be done but i do know it wont fit as is so modified is the word i would use for making it fit
Old 05-08-2008, 08:43 AM
  #231  
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does the rs200 have extra lag issues with that intercooler setup?
Old 05-08-2008, 08:44 AM
  #232  
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Originally Posted by jacko
well for a strt the intake is on top which is no good and without having them both sat infront of me i dont pretend to know what would need to be done but i do know it wont fit as is so modified is the word i would use for making it fit
to modify it, you would need to put a bend in it, and thats not modifying it, thats totally destroying the whole point of it.

How specifically do you aim to modify it and it still work, as in my humble opinion that simply is not possible in any practical manner, as ive looked at doing it.

its just TOTALLY the wrong size/shape to go on a YB in a sierra/escort

Its ideal for a mid mounted car with plenty of height about the engine though, which is hardly surprising, lol

If you fit it to a YB you have 2 choices of orientation, one with the TB pipework WAY above the bonnet, and the other with it going through the suspension, neither of which is any use whatsoever
Old 05-08-2008, 08:44 AM
  #233  
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Martin,
Perhaps that was what he meant by modifiying it to fit?
Old 05-08-2008, 08:45 AM
  #234  
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Originally Posted by Doby
does the rs200 have extra lag issues with that intercooler setup?
I dont know anyone who has driven one with the standard setup and a significantly different one to compare it to, so hard to attribute any lag to the intercooler or otherwise.
Old 05-08-2008, 08:45 AM
  #235  
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With regards to the head gasket issue, don't a lot of the stupid power drag cars use a solid copper h/g?
Old 05-08-2008, 08:46 AM
  #236  
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Originally Posted by Mike Rainbird
Martin,
Perhaps that was what he meant by modifiying it to fit?
I think i'd rather fit an LS2, it would be LESS hassle!
Old 05-08-2008, 08:46 AM
  #237  
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Originally Posted by RWD_cossie_wil
With regards to the head gasket issue, don't a lot of the stupid power drag cars use a solid copper h/g?
Yes, and for that application it works quite well.
Old 05-08-2008, 08:51 AM
  #238  
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the actual shape of the inlet is what makes it good isnt it

so if the shape stays the same but the pipe work going to it comes sweeping in then i cant see a problem

the problem with all the yb ones is that the air comes in from underneith which cant get to cylinders equaly and although much better the norwegian type comes in from the front witch means it has to cros the inlets of 3 cylinders before it gets to the 4th not ideal

the 200 one feeds all 4 equaly whitch is spot on but you would need to modify it to fit this is what i ment
Old 05-08-2008, 08:53 AM
  #239  
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Originally Posted by Chip
Yes, and for that application it works quite well.
What would be the issue fitting one to Rods engine? There are a few people who run them without issue on high power YB's ?
Old 05-08-2008, 08:55 AM
  #240  
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aparently its the stretching bolts that are the cause so might not need it


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