hks 264/272 cams idle

[l4248402t]

What rpms does your 264/272 cams sit at idle? My have to be at around 1k so it won't stall and the vac is around 10-12 in hg mostly.

 

[92awddsm]

Sounds like you have the timing belt off a tooth or 2. Ive got the big comp cam(272 equivilent) intake and exhaust and didnt have a real idle problem. Mine idled at 750 rpm but when if I hit the clutch while slowing down, rpm's would fall rapidly and stall occasionally. I had my eprom programmed for 950 rpm idle and had no problems since. My idle vacuum is around 14-15in-hg. I have a friend with 272's with the same idle as me.

 

[anconover]

could just be an intake leak. My 272's idle perfectly fine. Never stall when the car is warmed up. my HG is around 15, with the idle around 900rpms.

 

[Lunch_Box]

Have you driven the car with the new cams yet? It could be your timing belt but you would notice that after your first drive. If that's fine then I would suggest looking for a boost leak.

 

[PieTSI]

I have 272's and there is no idle problem whatsoever. Check your timing belt to see if its off at all.

 

[G_S_X]

idles fine, once my car is warmed up, its like stock cams. And I only have afc

 

[espinelli]

I have HKS 264/272's and they idle fine. I think when I first installed them.. along with many other upgrades the car occasionally died at idle. Eventually, that took care of itself and went away....maybe the ECU had to do some relearning.

 

[btracer]

i have 264/272 and it idles between 800-900... has a nice lope but never stalled or anything

 

[NeoStreamGSX]

i got the 264/272 combo and idle's at around 7-800..w/ vacuum around 10

 

[l4248402t]

I also thought the timing was off but when I check the timing marks they were all correct. I also check for boost leaks and there's none, I took the car for a drive and it seem's fine but it's hitting fuel cut even at 10psi with the cams. I didn't have any problem with fuel cut before I put in the hks cams. Sorry I forgot to mention my mods at the beginning so here's my list of some of my mods:

50trim, 680cc injectors, s-afc, afpr, maft, hks 264/272 cams, port polish (head, intake manifold, and 95 turbo manifold), sbr 1g fmic kit, 3" downpipe and exhaust, methanol injection, mbc and all the little bolts on.

 

[92awddsm]

Only other thing I could think of is fuel. I remember I had to lean the low and high throttle settings on mine after I installed the cams. Have you made any logs since the install? I would pull a couple of logs and see what o2 and fuel trims are.

 

[l4248402t]

Only other thing I could think of is fuel. I remember I had to lean the low and high throttle settings on mine after I installed the cams. Have you made any logs since the install? I would pull a couple of logs and see what o2 and fuel trims are.

I've done a acouple pulls but the battery on the palm pilot ran out and deleted all the logs. The car is down right now due to a broken clutch fork so I won't be able to do any runs for awhile.

 

[GSntncT]

Mine usually are between 7-900. My vac is usually 13-15.

 

[paul s]

272/272 and it idles at 900 or so, vacuum Hg 13-14.

 

[allturbo]

264/272, the idle hovers around 800-900rpm's. I turned the idle screw up a bit when I installed the cams because it didn't like the stock 750 idle. It would die sometimes because of a slow and sticky isc (idle surge), but it's fine now with the idle turned up. My vacuum changes depending on the temperature. When it's cold outside I will get 10-14. Usually it's around 15.