Topic: ls vtec cam timing (Read 7937 times)

fuse · « **on:** August 17, 2010, 08:04:54 PM »

Hi I built a ls vtec
b18a1 bottom
gsr head
gsr cams
gsr belt
gsr water pump

I got the belt on works fine drives fine. It just looks to me like the cam sprocket lines are not lining up perfect just a hair off. Is the ls bottom just a hair taller? I know with mini mes you run into all kinds of cam timing problems due to this. Is there an easy fix?

snm95ls · « **Reply #1 on:** August 17, 2010, 08:09:52 PM »

Non-VTAK B blocks are shorter, thus the timing marks are not quite dead on.

fuse · « **Reply #2 on:** August 17, 2010, 08:11:03 PM »

should I give a shit? How many degrees am I off? 2?

ratcityrex · « **Reply #3 on:** August 18, 2010, 07:21:14 PM »

Just add boost = problem fixed

ApexSilver06MR · « **Reply #4 on:** August 18, 2010, 07:47:33 PM »

Quote from: ratcityrex on August 18, 2010, 07:21:14 PM

Just add boost = problem fixed

Jorsher · « **Reply #5 on:** August 24, 2010, 05:29:57 PM »

Mine's off a cunt-hair as well too, no big deal.

Take ratcityrex's advice.

HiProfile · « **Reply #6 on:** August 25, 2010, 10:41:49 AM »

Its something like 0.55mm shorter, so it should retard the cams a little bit. Here is the way I remember what advance and retard does. Advancing helps low end, so it helps earlier (more advanced) on a dyno sheet. Retarding the cam helps top end, so it helps later (more retarded) on a dyno sheet.

Since the longer stroke will help with low end a little bit, that won't drop vs a gsr, but you should pick up even more top end than expected. Theoreticly according to cam timing, yet it tends to work this way.

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Author Topic: ls vtec cam timing (Read 7937 times)

fuse

ls vtec cam timing

snm95ls

Re: ls vtec cam timing

fuse

Re: ls vtec cam timing

ratcityrex

Re: ls vtec cam timing

ApexSilver06MR

Re: ls vtec cam timing

Jorsher

Re: ls vtec cam timing

HiProfile

Re: ls vtec cam timing