Issues after cam/ heads install
01-29-2018, 10:04 AM
#61
Am I missing something or did nobody see that he posted the headers were touching the frame and that's one of the issues he wanted to address while it was at the shop ?!?!?!?!?!
That could and would be exactly what would be causing the false knock right ??????
It does state they fixed the header issue but it just seems like maybe it isn't totally fixed ? I don't know it just seems header to frame contact is one of the main culprits for false knock
Also the number the op is stating , are those with the car at only 10 degrees of timing ? Cause obviously if the issue is fixed he'd pick up a good amount of hp and tq with the timing where it should be , maybe like 530/490 ??
That could and would be exactly what would be causing the false knock right ??????
It does state they fixed the header issue but it just seems like maybe it isn't totally fixed ? I don't know it just seems header to frame contact is one of the main culprits for false knock
Also the number the op is stating , are those with the car at only 10 degrees of timing ? Cause obviously if the issue is fixed he'd pick up a good amount of hp and tq with the timing where it should be , maybe like 530/490 ??
01-29-2018, 12:15 PM
#62
01-29-2018, 12:43 PM
#63
Racer
My first V8 car was a 91 Z28. I nearly pulled out every hair chasing a power loss/overheat issue. At the end of a LONG story, I had a clogged cat LMAO! #flashbacks
It's worth checking!
It's worth checking!
01-29-2018, 12:53 PM
#64
The X-pipe was the only thing touching and that was the first thing fixed. The dyno numbers they got were the best they could get with 22 deg of timing I think. It's obviously a lot lower at 10 deg. My question is, if it were false knock, the noise wouldn't go away when we reduce the timing would it? It has to be knock if we can't hear it when we set it to 10 deg. We can put 22 back in it and immediately hear it. But it's just a slight, light flutter noise, not loud at all. Sounds just like the shifter lightly rattling or something sitting in the cup holder rattling.
01-29-2018, 02:12 PM
#65
Again, Have Tick pull a plug after a wot pull with the timing in it and check the spark plug. Preferably a new set. Detonation will show up on a plug.
Last edited by Twinscrew; 01-29-2018 at 02:24 PM.
01-29-2018, 02:58 PM
#66
Safety Car
I don't think the plug trick works without a brand new plug. Even then, the KR are going to calm the knock quickly. Some 116 octane fuel sounds like a better test to me.
01-29-2018, 03:22 PM
#67
Yeah they're gonna check the exhaust to make sure it isn't clogged or whatever and put some high octane race fuel in to verify knock. I'm wondering if I shouldn't have had the heads milled with a cam that small? Could that cause issue?
01-29-2018, 03:47 PM
#68
Safety Car
Only if the heads were milled more than once or too much was cut off them. Both aren't likely scenarios.
01-29-2018, 03:54 PM
#69
02-01-2018, 09:31 AM
#72
Drifting
Sorry to hear about your troubles. I have a custom cam that is almost identical in specs to the BTR 2. A good tuner should be able to dial that cam in and get almost stock drivability with almost no surge or hesitation. Mine drives great. I made almost 560/490. But dyno numbers are just that - numbers. Hopefully you can get the issues worked out first and then dial it in with a great tune!
Last edited by Must_Have_Z; 02-01-2018 at 09:31 AM.
02-01-2018, 07:57 PM
#74
No they aren't wanting to mill them any more. They're gonna cc the heads just to verify they are what we think they are. Then prob go from there and check the cam.
04-05-2018, 06:31 AM
#75
Advanced
04-05-2018, 09:22 AM
#77
The shop still has my car. They've had it since January 19. Didn't even start working on it until last week and I know that because I saw a pic of it on a lift on their Facebook page. I'm beginning to get a little aggravated....
04-05-2018, 10:52 AM
#79
Le Mans Master
A little aggravated? If they would've charged me a dime I'd have lost my proverbial **** at them. Dude...it's APRIL! Subbing for input/updates too. BTW OP, I'm local to you man if you need bro level help.
Last edited by Pb82 Ronin; 04-05-2018 at 10:53 AM.
04-05-2018, 11:32 AM
#80
Yeah I'm trying to just remain patient, I know everyone is busy but the plan is to just pull the heads and cam to see if anything is wrong. I don't understand why it's taking so long. Gonna give them another call today. I think it's an issue of working on the cars of the owners who are asking the most for them. If I'm not calling asking about it, it's not getting worked on...