crower264 cams and idle problem not sure whats actually causing problem please read

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supraking16

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Sep 27, 2009
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I have cams and ever since I have installed them and crower springsit has not idle very good if I get it to idle good it will start acting up and stall when I let off the gas sometimes I pulled some vacuum hoses off and it ran alot better with a vacuum leak whish would usually makes something idle bad so I think it might be starving for air but I have cleaned all the idle air control valve stuff give me some advice I've got the cams where I want them for performance just idleing problem so its not streetable so thanks for any advice I get if u know something I should get to fic the problem tell me what and where from thanks :) o and the head was completely rebuile and arp head studs and tms head gasket
 
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supraking16

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Nosechunks;1657286 said:
Are you sure the cam/ignition timing is correct? Ive seen these cams idle pretty well.
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no i haven't yet im trying to figure the best way to tuneit while using stock injectors and afm but i swear when i pulled the hose off it was like it took a big breath after being suffocated or something and yes its right at twelve degrees before tdc im goin to give it one more degree of over lap i reduced it by four degrees might have been to much but i know now not to listen when a company says it needs no tune to look it up first i regret buying them i want stock cams back so i can just boost it more so much more driveable
 
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supraking16

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Sep 27, 2009
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i check the timing and adjust it everytime i move the exhaust cam what do yall recommen tuning it with i dont have alot of money but i do have a savings that was saving up for a standalone but i rather not spend that much unless i have to could i do it with just a apexi neo but wouldnt i have to buy injectors or will it work with stockers the car drives fine just doesnt like to stay idleing sometimes it will idle like a charm and others it wont stay on at all its so wierd and unpredictable

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airhead04;1657573 said:
I know these cams idle perfect....i have them in my car, with no problems.
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may i know what all u have done to it like tuning or piggyback or even ur cam settings and all bc that would help me u might have something i just need to get
 
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CT26smoker

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Are you guessing at the cam timing?
I see no actual opening/closing figures, or lobe center figures in any of your posts.
Do you have a degree wheel ?

Or did you just throw them in, and hope for the best ?
 
IBoughtASupra

IBoughtASupra

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Mar 10, 2009
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When running any aftermarket cams, they come with a paper with the suggested valve lash. I have a set of HKS 264 cams going in my 1J and they recommend certain valve lash for the intake and exhaust side. The paper for my 264 cams said 8 thou on intake and 12 on the exhaust side.

If your valves are set too tight, you will leave a valve open and you will not have smooth idle. If you have the lash too large, you will hear noises and can spit a shim. Put them in recommended spec.

After adding those cams, you should get adjustable cam gears. After timing the engine according to the marks on the front timing cover and the cam cover, you will need to degree the cams to have the optimum performance and driveability.
 
airhead04

airhead04

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supraking16;1657586 said:
i check the timing and adjust it everytime i move the exhaust cam what do yall recommen tuning it with i dont have alot of money but i do have a savings that was saving up for a standalone but i rather not spend that much unless i have to could i do it with just a apexi neo but wouldnt i have to buy injectors or will it work with stockers the car drives fine just doesnt like to stay idleing sometimes it will idle like a charm and others it wont stay on at all its so wierd and unpredictable

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may i know what all u have done to it like tuning or piggyback or even ur cam settings and all bc that would help me u might have something i just need to get
Click to expand...

I have an Apexi Neo tuning the fuel. Not 100% on the tune itself, but I could always go check if need be. But every car is different, so my tune may be different then yours. But apexi neo is what Im using.
 
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supraking16

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Sep 27, 2009
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i dont have a degree when or the knoledge on all that i need to talk to someone that can tell me exactly what valve lash is i have fidanza cam gears i have moved them a few time advancing them retarding them and reducing overlap but its pretty much allways the ame outcomei had a mochine shop put them in and doall the valve stuff and there well known around here more for old school stuff but they know what there doing i dont know how to degree them never been showed or anything but i have heard of these cams having problems im hoping thats not it though

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i have knowledge about motors ive been into cars about my whole life my step dad drag races and ive been reading and looking up stuff since i can remember and ive been to four automotive classes for about two years all together but we never went over cam tuning
 
hvyman

hvyman

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He had a shop install them. If he didnt do it then i doubt hes going to mess with the lash. Any good shop would had done it. He could tho double check with a feeler gauge.
 
suprarich

suprarich

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CT26smoker;1657592 said:
Are you guessing at the cam timing?
I see no actual opening/closing figures, or lobe center figures in any of your posts.
Do you have a degree wheel ?

Or did you just throw them in, and hope for the best ?
Click to expand...

I am wondering the same thing. Was the cams installed according to the timing events on the cam card? Or did they get installed like a set of OEM cams by just lining up the timing marks. Aftermarket cams NEED to be installed according to the timing card supplied with the cam or they will be out of time from the start. There is a sticky about how to adjust the cam gears and how to re-adjust ignition timing after moving the cam gears.
 
IBoughtASupra

IBoughtASupra

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hvyman;1657684 said:
He had a shop install them. If he didnt do it then i doubt hes going to mess with the lash. Any good shop would had done it. He could tho double check with a feeler gauge.
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Whoops, I didn't see that. Some shops think that the 7M, 1JZ and 2JZ run adjustable hydraulic lifters and they don't adjust them. Not a lot of shops know what they are doing on these engines.

They all can work on a Supra, 80% won't know what they are doing.
 
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supraking16

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Sep 27, 2009
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georgia
suprarich;1657931 said:
I am wondering the same thing. Was the cams installed according to the timing events on the cam card? Or did they get installed like a set of OEM cams by just lining up the timing marks. Aftermarket cams NEED to be installed according to the timing card supplied with the cam or they will be out of time from the start. There is a sticky about how to adjust the cam gears and how to re-adjust ignition timing after moving the cam gears.
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the shop rebuilt the head so im sure he knows it not hydraulic bc it was completely apart i also have crower springs and they just put the head together i put the head on i did only line the marks up i thought that was what u were suppose to do i thought crower would have made them to match themarks thats how i would of made them i remember talking to the guy and he told me had to just the pucks and he said it was kinda hard and told me about it so im guessiong he knows what he is doing the machine shop has put together 1000 hp 2j build together that tms designed for a guy down here so they know these engines a litttle atleast where is that sticky about cam timing

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