FilmerDude
Proven Member
- 201
- 6
- Nov 10, 2014
-
Temperance,
Michigan
I was wondering if there is a way to untension the timing belt so I can adjust my exhaust cam gear because it is a tooth off.
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He needs to re-time the engine if he's a tooth off.It's fairly easy if you have the proper tools and understand the process. I've swapped out numerous sets of cams without removing the timing belt. Basically, you'll be using the same procedure, but will only remove the exhaust cam gear.
RRE outlines the procedure nicely. Follow it step by step, and you'll be fine. Deviate from it or screw it up, and you'll have bent valves.
Basically, you'll want do the procedure up until it outlines removing the camshafts. Rather than doing that, just remove the exhaust cam cog, position it correctly, and reassemble. Triple check your timing marks, and take your time.
http://www.roadraceengineering.com/instructions/caminstructions.htm
He needs to re-time the engine if he's a tooth off.
(From your link)
"By using a straight edge, make sure the marks are dead center through the center line of the cam bolts. Do not trust your eyes to be sure that the marks line up through the center of the bolts, use a straight edge. If this does not all line up, stop here. It will explain the rough idle and low vacuum you had and give you a good reason not to have that same guy do your timing belt again. You will need to completely re-do your timing belt set up and tension. DO NOT use these instructions."