New cams installed
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From: Pittsburgh, PA
I ended up installing lifter shims to bring the lash adjusters back into factory spec. I must have been losing lift and duration cause now it acts like a whole different animal. Original post editted with new video.
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From: Pittsburgh, PA
No, I plan on taking it soon as I wanted to get the shims in and it took me nearly 2 weeks to get it tuned correctly. I still have some spark I want to throw at it but it won't be long until its 100%.
R&R the crankcase breather, valve cover, tensioner and idler pulleys, wheel and side engine shroud, crank pulley, timing cover, cam caps, cam end plates and cam sensor, then cams, followers, etc., and also removed the blower and manifold to replace the intake gasket yet again as the other new one leaked on me.
I need a break from this thing.
I need a break from this thing.
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From: Calgary,Canada
How was the tuning with the 10:1's I heard ther was problems getting them to work with pump gas. So the cams drop the compression down low to help out with this.If this works out the way it is supposed to it will be awesome.
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The car fought me with the cams though. You can only adjust coastdown and idle correction with spark so far before you pull so much timing the car won't run or add so much it just gives idle overspeed faults. The rest of the correction had to be taken up with the electronic throttle. You have a lazy electronic throttle when it comes to idle correction. Its just one gigantic headache that took me almost 2 weeks of trial and error before I found values that worked decently.
I couldn't imagine having to tune for more aggressive cams than these. I'm not sure if the stock PCM has capabilites to adapt to anything more aggressive.
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From: San Diego, CA.
I finally got my cams in the mail the other day (been waiting on them for a while), just got done installing them. Also threw in 10-1 forged pistons, neutral balance shafts, Supertech 78lb dual coil valve springs, arp head studs, and a cometic head gasket.
The cams were custom made and ground to HKS EVO 272 specs. I haven't got a chance to tune it yet since I just got done with it, but it idles great, however it will stall when rolling to a stop. Toning down the corrective idle spark should fix it.
Small update: Car is mostly tuned, I hope. I ended up installing lifter shims that the grinder provided me and ends up I must have been losing lift/duration as the car is now completely different yet again. Took me forever to figure out how to get the coastdown to a streetable level but finally fixed it and had to raise idle to 950rpm to keep it running.
Lesson I learned: Drive by wire and aggressive cams are not a good mix. 2 weeks of tuning but I finally got it to run correctly.
New Video with shimmed lash adjusters.
The cams were custom made and ground to HKS EVO 272 specs. I haven't got a chance to tune it yet since I just got done with it, but it idles great, however it will stall when rolling to a stop. Toning down the corrective idle spark should fix it.
Small update: Car is mostly tuned, I hope. I ended up installing lifter shims that the grinder provided me and ends up I must have been losing lift/duration as the car is now completely different yet again. Took me forever to figure out how to get the coastdown to a streetable level but finally fixed it and had to raise idle to 950rpm to keep it running.
Lesson I learned: Drive by wire and aggressive cams are not a good mix. 2 weeks of tuning but I finally got it to run correctly.
New Video with shimmed lash adjusters.
damn Al your right the difference is like night and day with those shims as far as the dyno goes. I cant wait to see dyno numbers. Did you have a dyno with all your mods before these cams? as soo as you get the dyno and or tuning done send the numbers my way Dave Endrigo of flowtechnics is also interested in what kind of power difference these bad boys make. He believes they will make nice numbers.
Last edited by MVP; Jun 4, 2007 at 03:24 AM. Reason: Automerged Doublepost
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damn Al your right the difference is like night and day with those shims as far as the dyno goes. I cant wait to see dyno numbers. Did you have a dyno with all your mods before these cams? as soo as you get the dyno and or tuning done send the numbers my way Dave Endrigo of flowtechnics is also interested in what kind of power difference these bad boys make. He believes they will make nice numbers.
you have to take the cams back out to put the shims in. honestly though once you've taken DOHC cams out (especially on these engines) its a breeze. ( find it easier then a in the block cams i.e. Small Block Chevy's ect. the LSJ build book will tell you in detail how to do this.
you have to take the cams back out to put the shims in. honestly though once you've taken DOHC cams out (especially on these engines) its a breeze. ( find it easier then a in the block cams i.e. Small Block Chevy's ect. the LSJ build book will tell you in detail how to do this.
And yes, the cams aren't hard to remove and replace, its just a bunch of wrenching, nothing difficult.
I really have to thank all you guys again (MVP, Sinister, Dave) for helping me out on this one. I was obsessed with camming this car and only dreamed of actually having hks 272 spec cams. Thanks guys
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From: Delray Beach, FL
Hey Witt im looking into getting these cams next month what was the price to have your stock cams regrounded? I emailed the guy that you said did it just wanted to hear from you also. Im probably going with the same mods as you and doing the install my self with a few friends.
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Hey Witt im looking into getting these cams next month what was the price to have your stock cams regrounded? I emailed the guy that you said did it just wanted to hear from you also. Im probably going with the same mods as you and doing the install my self with a few friends.
I should have been there last week but I've found the limit on our stock PCV system and had a little trouble finding a fix until recently. If I'm off work this Wednesday (50/50 chance) I hope to crack off a few runs on the stock Pirellis before my new wheels and tires come in the mail.
good **** man.... I need the info on this guy.. I have an extra set of stock cams jut hanging around... I was planning on doing that grind myself since it should really help out with the turbo swap
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When redline dan gets a hold of some other internal parts we'll be installing a set of the same cams into his turbo redline. I'm kinda curious as to how it will affect his torque curve and turbo spool.
hmmm.... the turbo hes using is quite large thoug right? I think those cams should help it spool faster, but I def see a decrease in low end tq. I need to look at those cam specs again.
I was gonna try my almighty T-76, but better judgement has ruled against that, so that's oging up for sale and I"m ordering a gt30 next week. Pretty much everything is ready to go, just need that smaller turbo. New motor is in pieces, but at least I have all the ones I need to put it together again. So we shall see how long the stock motor holds up before that though
I was gonna try my almighty T-76, but better judgement has ruled against that, so that's oging up for sale and I"m ordering a gt30 next week. Pretty much everything is ready to go, just need that smaller turbo. New motor is in pieces, but at least I have all the ones I need to put it together again. So we shall see how long the stock motor holds up before that though
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Cool, yeah hes still using the Holset. I'm not sure what its going to do on that car though. Increase airflow to spool the turbo faster (which it what HKS claims in their ads for this profile) or take a torque hit and make a soft low end even weaker?
Your original turbo woulda made a dyno queen which would have hurt its track/streetablity imo. Though theres always work arounds with that which I hope to try on Dans car in the next week or two.
Your original turbo woulda made a dyno queen which would have hurt its track/streetablity imo. Though theres always work arounds with that which I hope to try on Dans car in the next week or two.
yeah I know... more aggressive low end timing and nitrous can help out, but that's not really what I want. Still stuck btwn a gt30 or gt28. with the new motor going in I know It'll be capable of at least 500whp, but I dunno how the car is gonna take that, plus the whole tranny thing also.
But I do think those cams will have a negative effect down low with the turbo he is running, now if he went with a gt28xx setup, I think it would make the car a beast
But I do think those cams will have a negative effect down low with the turbo he is running, now if he went with a gt28xx setup, I think it would make the car a beast
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Ok. im at work and only got a chance to read about half way through this post. I got on here today just to look for cam info. I would just like to know what i would be looking at for the cams, shims, and a tune. money wise. Thanks guys. I cant wait to see what kind of gains these things made for ya.