cam gear settings
#286
EvoM Guru
iTrader: (6)
(1) You appear to have a problem, and it isn't the cams. It could be a substantial pressure leak and/or a tuning issue. That turbo cannot possibly be that laggy.
(2) Your +1/+2 (in/ex)cam timing adjustment widens the LSA from 110 to 112 deg, and that isn't going to help. +1/-1 will help, but it won't fix the root cause of the issue.
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kev_evo1 (Jul 5, 2016)
#287
Two quick observations...
(1) You appear to have a problem, and it isn't the cams. It could be a substantial pressure leak and/or a tuning issue. That turbo cannot possibly be that laggy.
(2) Your +1/+2 (in/ex)cam timing adjustment widens the LSA from 110 to 112 deg, and that isn't going to help. +1/-1 will help, but it won't fix the root cause of the issue.
(1) You appear to have a problem, and it isn't the cams. It could be a substantial pressure leak and/or a tuning issue. That turbo cannot possibly be that laggy.
(2) Your +1/+2 (in/ex)cam timing adjustment widens the LSA from 110 to 112 deg, and that isn't going to help. +1/-1 will help, but it won't fix the root cause of the issue.
I have done a pressure test and it holds near 28psi with no leaks, that's with the evo 9 bov still on as well
fitted a new forge actuator with a 20psi spring and adjusted preload correctly.
Already had the turbo sent back and re checked but they found nothing wrong infact they blamed the cams so I invested in adjustable pulleys
#289
That has to be it, the only thing left I guess.
I am still running the same map which I had done on stock cams, Its a evo 6 ecu, with 3 port and denso 660 injectors
All I've done to the map since fitting the cams is remove some timing to shift knock and got it to run a tad richer top end still spools 12.5ish but drops into 11.5 at top rev's
I've set the base ignition timing to 5bdtc
This is before cams and turbo
Still hitting the same load settings on logger
I am still running the same map which I had done on stock cams, Its a evo 6 ecu, with 3 port and denso 660 injectors
All I've done to the map since fitting the cams is remove some timing to shift knock and got it to run a tad richer top end still spools 12.5ish but drops into 11.5 at top rev's
I've set the base ignition timing to 5bdtc
This is before cams and turbo
Still hitting the same load settings on logger
#290
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kev_evo1 (Jul 9, 2016)
#292
#293
Evolving Member
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Brianawd (Aug 9, 2016)
#298
EvoM Guru
iTrader: (6)
You should not need to move the exhaust cam.
The S3s will give slightly quicker spool with the intake at 0, although the short rod/stroke ratio of the 2.3 should yield a little more power upstairs with the intake at -1 or -2. The reason for this is the short R/S ratio means the piston moves faster around TDC, which has the effect of behaving as if the intake cam is slightly advanced. Because of this, a 2.3 needs the intake cam slightly retarded to give the same characteristics as it would with the shorter stroke 2.0. If you have a IX and are using MIVEC, you would simply reduce the advance a bit after the turbo has spooled.
The S3s will give slightly quicker spool with the intake at 0, although the short rod/stroke ratio of the 2.3 should yield a little more power upstairs with the intake at -1 or -2. The reason for this is the short R/S ratio means the piston moves faster around TDC, which has the effect of behaving as if the intake cam is slightly advanced. Because of this, a 2.3 needs the intake cam slightly retarded to give the same characteristics as it would with the shorter stroke 2.0. If you have a IX and are using MIVEC, you would simply reduce the advance a bit after the turbo has spooled.
#299
EvoM Guru
iTrader: (1)
Should swap the S3's out for R2's.