Lifters collaspsing
#31
Re: Lifters collaspsing
Originally Posted by 95Z28Camaroman
I tried Napa, but I don't think they ship to the UK!
What about these form Summit Racing CRN-10530-16 $189
http://store.summitracing.com/defaul...h.asp&N=400114
will they do the job?
What about these form Summit Racing CRN-10530-16 $189
http://store.summitracing.com/defaul...h.asp&N=400114
will they do the job?
#32
Re: Lifters collaspsing
Originally Posted by hvyss
I have a simular problem. I hit the rev limiter at 7000 rpms at the track and it backfired when I shifted and now have a lifter tick. The lifters are the Comp R's and none of the rockers nuts and poly locks are backed off. Could a lifter colapsed? I have read bad things about the Comp r's. The oil pressure is good 28-30 psi at idle and 60-65 at WOT so I don't think it is in the bottom end.
HVY SS
HVY SS
Might have bent a valve to just a bent pushrod.
#33
Re: Lifters collaspsing
I have checked all the push rods way back I just needed to know if these crane lifters would do CRN-10530-16 and now you and Summit have confirmed it thanks I will let you know if it does the trick.
Thanks for giving me some support and guidance.
Hopefully this will do it!
Or it's an engine out job!
I will keep you posted!
Thanks for giving me some support and guidance.
Hopefully this will do it!
Or it's an engine out job!
I will keep you posted!
#34
Re: Lifters collaspsing
I dropped the oil pan off the motor and found the problem my oil pump pickup is partley blocked by a piece of rubber that has no buisness being in the pan and I have spun a con rod bearing due to low oil volume.
As I said in previous post the whole motor looks like it's been starved of oil and I have this black flakey crud every where. My brother says thats the lack of oil then it gets baked on and goes flakey.
I have now replaced the crank with a stock one I got from a guy who builds stroker motors who lives close by. I have put new mains and con rod bearings in and a new Melling oil pump with a new metal coupling oil pump drive.
I have new lifters in there and I have just bought some secondhand LT4 valve springs.
I am thinking of putting a LT4 Hotcam in there but is there any other cam I cam use with the LT4 valve springs? Bear in mind I have 1.6RR's too!
So what lift cam will these springs handle?
As I said in previous post the whole motor looks like it's been starved of oil and I have this black flakey crud every where. My brother says thats the lack of oil then it gets baked on and goes flakey.
I have now replaced the crank with a stock one I got from a guy who builds stroker motors who lives close by. I have put new mains and con rod bearings in and a new Melling oil pump with a new metal coupling oil pump drive.
I have new lifters in there and I have just bought some secondhand LT4 valve springs.
I am thinking of putting a LT4 Hotcam in there but is there any other cam I cam use with the LT4 valve springs? Bear in mind I have 1.6RR's too!
So what lift cam will these springs handle?
#35
Re: Lifters collaspsing
Originally Posted by JustNO
For high reving engines and big camshaft: Comp r lifters with hydra rev kit or Morel lifters will be the best choice..
Also I think problems with comp R lifters become because of bad preload (turns).. I don't know what is the exact preload, but compcam suggest 1/16 turn..
Also I think problems with comp R lifters become because of bad preload (turns).. I don't know what is the exact preload, but compcam suggest 1/16 turn..
#37
Re: Lifters collaspsing
I have these Crane roller lifters CRN-10530-16
I don't have comp R'
If I don't use my 1.6 RR's I think I can use a couple of other cams such as thr CC305 CCr 503
I have cheap 1.6RR's (NO name steel roller rockers) and I did not notice any gain from fitting them!
If I went for one of the above cams I would see benefit from a longer duration cam?
I don't have comp R'
If I don't use my 1.6 RR's I think I can use a couple of other cams such as thr CC305 CCr 503
I have cheap 1.6RR's (NO name steel roller rockers) and I did not notice any gain from fitting them!
If I went for one of the above cams I would see benefit from a longer duration cam?
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