1.8 CVH Roller Lifters...
01-10-2010, 09:11 PM
#41
ive heard a few people do it .... and my engine is a good spec and the cam im getting has a power band of 2500rpm-7000rpm so i will set the rev limit for about 7k depnding on what its like when mapped....
and i dont want the same happening
and i dont want the same happening
05-10-2010, 07:55 PM
#46
Too many posts.. I need a life!!
Hi All,
Karlos has it correct. The roller lifter camshaft is ground from a different material - ford ones used pressed lobes on the camshaft central core, and the replacement ones are steel billet machined. The camshaft lobe profile is also ground different for a roller lifter.
The lobe looks much larger than a standard flat lifter profile.
The picture is a 1.9 HO roller lifter camshaft.
These cams will not fit the UK head - the cam bearing journals are all the same size, where the UK heads have different sized journals front to rear. Our 1.9 cams can be removed from the front or rear of the engine.
Karlos has it correct. The roller lifter camshaft is ground from a different material - ford ones used pressed lobes on the camshaft central core, and the replacement ones are steel billet machined. The camshaft lobe profile is also ground different for a roller lifter.
The lobe looks much larger than a standard flat lifter profile.
The picture is a 1.9 HO roller lifter camshaft.
These cams will not fit the UK head - the cam bearing journals are all the same size, where the UK heads have different sized journals front to rear. Our 1.9 cams can be removed from the front or rear of the engine.
06-10-2010, 10:40 AM
#48
The first was std ERST items. The 2nd was R16i rockers which are different.
I have also seen many many CVH heads pull the stud out of the head, and also pull the nut off the thread if the correct nut is not used.
Roller rockers i make will not snap and have no issues being rev'd past 7500rpm. I use these with solid lifters made by KENT and custom profile cam shafts similar to the CVH35/37. The studnut which holds the rocker on is a custom made item which also helps the rocker stud to have a little more strength.
A little info to help.
Regards
Jano
06-10-2010, 11:32 AM
#49
Turbocharging Technician
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Hi All,
Karlos has it correct. The roller lifter camshaft is ground from a different material - ford ones used pressed lobes on the camshaft central core, and the replacement ones are steel billet machined. The camshaft lobe profile is also ground different for a roller lifter.
The lobe looks much larger than a standard flat lifter profile.
The picture is a 1.9 HO roller lifter camshaft.
These cams will not fit the UK head - the cam bearing journals are all the same size, where the UK heads have different sized journals front to rear. Our 1.9 cams can be removed from the front or rear of the engine.
Karlos has it correct. The roller lifter camshaft is ground from a different material - ford ones used pressed lobes on the camshaft central core, and the replacement ones are steel billet machined. The camshaft lobe profile is also ground different for a roller lifter.
The lobe looks much larger than a standard flat lifter profile.
The picture is a 1.9 HO roller lifter camshaft.
These cams will not fit the UK head - the cam bearing journals are all the same size, where the UK heads have different sized journals front to rear. Our 1.9 cams can be removed from the front or rear of the engine.
06-10-2010, 12:20 PM
#50
Power
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06-10-2010, 12:35 PM
#51
Normal rockers can snap when used hard. I have snapped 2 rockers in my XR3 over the last 10 years of abuse.
The first was std ERST items. The 2nd was R16i rockers which are different.
I have also seen many many CVH heads pull the stud out of the head, and also pull the nut off the thread if the correct nut is not used.
Roller rockers i make will not snap and have no issues being rev'd past 7500rpm. I use these with solid lifters made by KENT and custom profile cam shafts similar to the CVH35/37. The studnut which holds the rocker on is a custom made item which also helps the rocker stud to have a little more strength.
A little info to help.
Regards
Jano
The first was std ERST items. The 2nd was R16i rockers which are different.
I have also seen many many CVH heads pull the stud out of the head, and also pull the nut off the thread if the correct nut is not used.
Roller rockers i make will not snap and have no issues being rev'd past 7500rpm. I use these with solid lifters made by KENT and custom profile cam shafts similar to the CVH35/37. The studnut which holds the rocker on is a custom made item which also helps the rocker stud to have a little more strength.
A little info to help.
Regards
Jano
lol
06-10-2010, 12:39 PM
#52
Normal rockers can snap when used hard. I have snapped 2 rockers in my XR3 over the last 10 years of abuse.
The first was std ERST items. The 2nd was R16i rockers which are different.
I have also seen many many CVH heads pull the stud out of the head, and also pull the nut off the thread if the correct nut is not used.
Roller rockers i make will not snap and have no issues being rev'd past 7500rpm. I use these with solid lifters made by KENT and custom profile cam shafts similar to the CVH35/37. The studnut which holds the rocker on is a custom made item which also helps the rocker stud to have a little more strength.
A little info to help.
Regards
Jano
The first was std ERST items. The 2nd was R16i rockers which are different.
I have also seen many many CVH heads pull the stud out of the head, and also pull the nut off the thread if the correct nut is not used.
Roller rockers i make will not snap and have no issues being rev'd past 7500rpm. I use these with solid lifters made by KENT and custom profile cam shafts similar to the CVH35/37. The studnut which holds the rocker on is a custom made item which also helps the rocker stud to have a little more strength.
A little info to help.
Regards
Jano
06-10-2010, 01:44 PM
#54
The difference with RS16i lifters is that they lift 1mm higher than std. This has been taken into account with the new ones i will be making.
The roller rockers can be used with any CVH head, any camshaft and lifter combination.
With double or high pressure springs, lightweight caps, solid lifters, decent cam, roller rockers and worked head you would expect the best results and the most reliability for high power, this is what i have on my std 1.6cvh ERST engine and produces 264bhp with green 803injectors at max duty cycle. I will upgrade to light blues / greys at some point for next year. But to be honest i wont be doing it to get more power as i dont think the std pistons and rods will take much more, its purely down to running the injectors at a safe rate.
As for pics of my parts i have never put them on other sites fella for obvious reasons, although there is a pic of the head i had with them fitted floating about a couple of months ago.
Regards
Jano
The roller rockers can be used with any CVH head, any camshaft and lifter combination.
With double or high pressure springs, lightweight caps, solid lifters, decent cam, roller rockers and worked head you would expect the best results and the most reliability for high power, this is what i have on my std 1.6cvh ERST engine and produces 264bhp with green 803injectors at max duty cycle. I will upgrade to light blues / greys at some point for next year. But to be honest i wont be doing it to get more power as i dont think the std pistons and rods will take much more, its purely down to running the injectors at a safe rate.
As for pics of my parts i have never put them on other sites fella for obvious reasons, although there is a pic of the head i had with them fitted floating about a couple of months ago.
Regards
Jano
lol
..... and thats my thoughts im intrested as i want my engine to rev around 7+k as my t34 wont come in till what 4k lol
19-10-2010, 06:37 PM
#63
13-01-2011, 10:54 PM
#75
It Wasnt Me!
Thread dredging...
Any more info on this?
I'm about to rebuild my trusty old cvh turbo, and I don't want to run the risk of it eating a camshaft (I reckon it's down to poor oil pressure/bad lubrication.
Anyway, I was thinking of a set of the 1.8 CVH lifters and poss a set of roller rockers (I know they aint really needed but hey ho..) does anyone do a kit for the 1.6 cvh, janno?? prices?
Any more info on this?
I'm about to rebuild my trusty old cvh turbo, and I don't want to run the risk of it eating a camshaft (I reckon it's down to poor oil pressure/bad lubrication.
Anyway, I was thinking of a set of the 1.8 CVH lifters and poss a set of roller rockers (I know they aint really needed but hey ho..) does anyone do a kit for the 1.6 cvh, janno?? prices?
14-01-2011, 08:40 PM
#76
Jano may do a roller rocker kit...
For the 1.8 roller lifters you will need to machine the head slightly for lifter retainers (stops the lifters from spinning) and find an appropriate cam, as i don't think the standard lifter cams are appropriate. Newmans may be able to supply a custom grind for this application etc.
And thats about as far as i got before ignoring the problem lol.
another option which i briefly looked into was making up a cam spray bar and tapping into an oil gallery. But decided i didn't fancy scrapping a head finding a suitable gallery and then scrapping my bottom end due to reduced oil pressure
another option is an external (possibly electric) oil pump supplying the cam spray bar, i couldn't find a suitable pump as most are either for dry sumps etc and are bloody expensive, more so than a new cam every once and a while.
I don't know if any one has looked at using a zetec oil pump? or if a zetec oil pump has better out put than a cvh....
So currently i have smoothed out and counter sunk the oiling holes for the cam and will see if this helps at all.
Rob,
For the 1.8 roller lifters you will need to machine the head slightly for lifter retainers (stops the lifters from spinning) and find an appropriate cam, as i don't think the standard lifter cams are appropriate. Newmans may be able to supply a custom grind for this application etc.
And thats about as far as i got before ignoring the problem lol.
another option which i briefly looked into was making up a cam spray bar and tapping into an oil gallery. But decided i didn't fancy scrapping a head finding a suitable gallery and then scrapping my bottom end due to reduced oil pressure
another option is an external (possibly electric) oil pump supplying the cam spray bar, i couldn't find a suitable pump as most are either for dry sumps etc and are bloody expensive, more so than a new cam every once and a while. I don't know if any one has looked at using a zetec oil pump? or if a zetec oil pump has better out put than a cvh....
So currently i have smoothed out and counter sunk the oiling holes for the cam and will see if this helps at all.
Rob,
14-01-2011, 11:07 PM
#77
It Wasnt Me!
cheers!
I happen to know the oil pressure from a zetec is miles better than the CVH, so one option is a ZVH, I don't know if the zetec oil pump would fit onto a CVH, I wouldn't imagine so but can't say for sure.
So basically it's a bit of money for machining, custom cam and the roller rockers...but no one really knows 100% if it's better/will definately work. hmm.....tempted to just go full zetec but really didn't want to spend a lot of cash as i'd be happy with 200bhp, just don't want to buy cams every month as it's already chewed the original and a piper (albeit 2nd hand but all lifters fitted in correct position, AND it's got lowish oil pressure....
)
I happen to know the oil pressure from a zetec is miles better than the CVH, so one option is a ZVH, I don't know if the zetec oil pump would fit onto a CVH, I wouldn't imagine so but can't say for sure.
So basically it's a bit of money for machining, custom cam and the roller rockers...but no one really knows 100% if it's better/will definately work. hmm.....tempted to just go full zetec but really didn't want to spend a lot of cash as i'd be happy with 200bhp, just don't want to buy cams every month as it's already chewed the original and a piper (albeit 2nd hand but all lifters fitted in correct position, AND it's got lowish oil pressure....
)
15-01-2011, 09:49 AM
#79
I might re look into it, im not sure if you can get different types if roller lifters, if you can get one with a ball bearing rather than a needle type roller (never seen them ) then you wouldn't need the head machining, for retainers... The retainers stop the lifter spinning.
Im sure the zetec oil pump isn't a direct fit, would love to know if it was possible though. The zetecs better oil pressure could be down to tolerances and design rather than a higher out put pump.
Any ho, should have some time this summer.
Rob,
) then you wouldn't need the head machining, for retainers... The retainers stop the lifter spinning. Im sure the zetec oil pump isn't a direct fit, would love to know if it was possible though. The zetecs better oil pressure could be down to tolerances and design rather than a higher out put pump.
Any ho, should have some time this summer.
Rob,
15-01-2011, 10:48 AM
#80
Ball bearing type would be great, but this far down the line I doubt it
Zetec pump will not fit, and as you say it could just be down to tolerances, if you preload the relief spring enough in the CVH pump it will make enough pressure to blow oil out sides of the filter!
Zetec pump will not fit, and as you say it could just be down to tolerances, if you preload the relief spring enough in the CVH pump it will make enough pressure to blow oil out sides of the filter!