Cams and valve train upgrade
#1
Registered User
Thread Starter
Cams and valve train upgrade
so I want to upgrade to the tomei 272 cams, i know I have to upgrade the valve train also but what is everything I need to do to make them work?
#2
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iTrader: (3)
If you are thinking of the 272 hi lift cams(11.3, 11mm lift), Tomei recommends 1mm deeper valve reliefs in your pistons. The 10.8mm lift cams ahould be good. You'll need better valve springs. If you are able, use the OEM valve retainers. They are forged aluminum and lighter than Ti retainers. If you need to swap lifters, look into getting the DLC lifters for a little less friction (the DE lifters are perfectly fine though if they are in spec).
#3
Registered User
Thread Starter
If you are thinking of the 272 hi lift cams(11.3, 11mm lift), Tomei recommends 1mm deeper valve reliefs in your pistons. The 10.8mm lift cams ahould be good. You'll need better valve springs. If you are able, use the OEM valve retainers. They are forged aluminum and lighter than Ti retainers. If you need to swap lifters, look into getting the DLC lifters for a little less friction (the DE lifters are perfectly fine though if they are in spec).
#5
Registered User
Thread Starter
Well I just got done talking to my friend and we might end up just doing forged internals along with the cams so saying that I might as well upgrade the full valvetrain right?
#7
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#8
dnash:
Just out of curiosity, I was considering the JWT S1 cams, they are 10.87mm EX/IN, so I presume I'd be ok (2004 Z) + the springs.
Also just so I can look, what specific cams are the Tomei ones as they seem to have many.
Just out of curiosity, I was considering the JWT S1 cams, they are 10.87mm EX/IN, so I presume I'd be ok (2004 Z) + the springs.
Also just so I can look, what specific cams are the Tomei ones as they seem to have many.
#9
Registered User
Thread Starter
I was looking at their 272 10.5 in.ex cams and I've heard any of their cams bigger than 264 they reccomend their valve spring kit
#10
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RobPhoboS (02-13-2017)
#13
What about Brian Crower ?
Specs:
Adv. duration: 264 in / 264 ex
Dur @ 0.050 : 222 in/ 222 ex
Lift (in) : 0.426"/ 0.426"
Lift (mm): 10.82/ 10.82
Looks comparable to the JWT S1 set, so for me it's either the BC's or JWT.
The JWT C2 set probably have a bit too much lift for the stock pistons I guess (11.58mm).
Oh, and the spring kits - I'm not sure which to get:
https://www.z1motorsports.com/engine...it-p-2139.html
https://www.z1motorsports.com/engine...it-p-5173.html
Specs:
Adv. duration: 264 in / 264 ex
Dur @ 0.050 : 222 in/ 222 ex
Lift (in) : 0.426"/ 0.426"
Lift (mm): 10.82/ 10.82
Looks comparable to the JWT S1 set, so for me it's either the BC's or JWT.
The JWT C2 set probably have a bit too much lift for the stock pistons I guess (11.58mm).
Oh, and the spring kits - I'm not sure which to get:
https://www.z1motorsports.com/engine...it-p-2139.html
https://www.z1motorsports.com/engine...it-p-5173.html
Last edited by RobPhoboS; 02-23-2017 at 09:50 AM.