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Cam gudies ??
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05-03-2008, 12:58 AM
Post: #1
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Cam gudies ??
Hi all again im just wondering if these are stock
![[Image: AEU86 AE86 - Cam gudies ??]](http://i15.photobucket.com/albums/a385/alex_evo/DSC00516.jpg "AEU86 AE86 - Cam gudies ??") ![[Image: AEU86 AE86 - Cam gudies ??]](http://i15.photobucket.com/albums/a385/alex_evo/DSC00511.jpg "AEU86 AE86 - Cam gudies ??") and if anyone know how to tune them thx |
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05-03-2008, 01:52 AM
Post: #2
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Cam gudies ??
Not stock... someone has converted the OEM to adjustable. Tuning the
cams means dyno time, or lots of hours with a DTI and degree wheel to try them at different settings... with road testing after each change. If the car is running well, I'd say leave them where they are  Cheers... jondee86 |
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05-03-2008, 03:47 AM
Post: #3
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Cam gudies ??
at the moment the car is idling quite bad but this could be camshaft or lightnen flywheel. i guess this as i dont know wht has been done to the engine etc.
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05-03-2008, 01:00 PM
Post: #4
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Cam gudies ??
If you have stock cams and the cam timing has been changed with
the adjustable pulleys, it could affect the idle. Closing up the lobe centres will increase valve overlap, possibly allowing exhaust blowback (charge dilution) at idle. If the cams have been changed to longer duration, the same problem can occur. You may need to degree the cams to check the duration and lobe centres. Aftermarket cams are usually marked on the end of the camshaft, but you would need to pull the pulley off to check. Cheers... jondee86 |
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05-03-2008, 08:53 PM
Post: #5
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Cam gudies ??
found out today that it has HKS cams but dont know which one a friend tried measuring it and he gets roughly 8.3mm lift (not too accurate)
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05-04-2008, 12:52 AM
Post: #6
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Cam gudies ??
If you want to get serious with tuning the cams you will need to check
the duration. If you have 272 duration or higher, you will probably need to crack the throttle open and idle at 1000 or 1100 rpm. Higher overlap lowers the manifold vacuum at idle, degrades the MAP signal, and confuses the ECU. However, longer duration cams are always going to do their best work at high rpm, and idle quality is the tradeoff. Quad throttles are said to give much better idle, but they are almost always installed with an aftermarket ECU, so not a fair comparison. Cheers... jondee86 |
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05-04-2008, 04:20 AM
Post: #7
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Cam gudies ??
thx for the advice will have to keep the throttle open then to avoid stalling as at the moment the revs sometimes drops after blipping the throttle and stalls the enigne this happens if i go drifting or cane the engine
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