Subject: Re: Camshaft Timing/New Data
Author: dave luby
Date: Sep 10, 2001, 6:07 PM
Post ID: 1708184125
Joe,I am no expert on the V7 Sport but it seems to me I read where the
valves are suppose to be set at .008" on both intake and exhaust.Not
.019",this could be part of the reason why your cam timing is off. I run a
reground cam , ( to the Sport specks.) in my Eldo.and set valves at .008 and
.010. Dave
| From: joe jump <jum-@hotmail.com> Reply-To: Loopfram-@topica.com To: Loopfram-@topica.com Subject: Camshaft Timing/New Data Date: Mon, 10 Sep 2001 14:04:56 ============================================================ Join memolink.com and get FREE gift certificates to Wal*Mart, Target, Best Buy, Olive Garden and more! http://click.topica.com/caaac5Rb1dfltb2HKn1a/Memolink ============================================================ Hello Loopers, First off, I would like to thank you all for responding with so many good recommendations. Great List!! Well, I spent some time in the garage this weekend getting some data with a degree wheel. I made up a timing plug, essentially a gutted spark plug with a 3/8" bolt passing through the shell & protruding about an inch beyond into the combustion chamber. Mounting the degree wheel to the alt. rotor and using this "tool" as a piston stop, I located tdc on the R/H cylinder in the usual way. First discovery was that the timing marks were off on the r/h side by about 5-6 deg. The L/H side was almost dead nuts on. So my first plan of action is to reset the timing, after I make a wrench to loosten the distributor. While I had the degree wheel mounted, I decided to measure the cam timing. The following is the data I found (numbers in brackets are specs from factory manual): Right Hand Cylinder Intake Opens 32� BTDC(40� BTDC)late 8� Intake Closes 79� ABDC(70� ABDC)late 9� Exhaust Opens 62� BBDC(63� BBDC)late 1� Exhaust Closes 36� ATDC(29� ATDC)late 7� Left Hand Cylinder Intake Opens 32� BTDC(40� BTDC)late 8� Intake Closes 78� ABDC(70� ABDC)late 8� Exhaust Opens 56� BBDC(63� BBDC)late 7� Exhaust Closes 34� ATDC(29� ATDC)late 5� I used the procedure stipulated in the workshop manual, i.e., set valve lash to .019", note crank position when valve starts to open. It looks as though my cam is timed about 8 degrees late. The only figure that disputes this is the opening of the r/h exhaust, but since most the other data points are in sinc, I'm going to attribute the discrepency to manufacturing tolerances. My next step will be to bump up the cam timing. I find it quite interesting to hear all the testimonials on re-installing the intake runners. That sure sounds like an easy one! I have a set of stacks from an 850-T, and also a set from a V700 which are of the more traditional "cone" shape. It would be easy to open the V700 set up to 30 mm from 29---"We have the technology!" Or should I use the standard items? Maybe I'll try both! These mods I will try one at a time, starting with the ignition timing, then the intake stacks, and lastly the cam timing. Next question: can the timing cover be removed from the engine (Tonti frame) without first removing the engine from the frame? Thanks! Joe in St Louis _________________________________________________________________ Get your FREE download of MSN Explorer athttp://explorer.msn.com/intl.asp ============================================================ TopOffers: the Smart Shoppers Savings Secret! Cool savings. Hot deals. Free stuff. Right in your inbox. And, get a FREE BONUS when you sign up now! http://click.topica.com/caaadfIb1dfltb2HKn1f/Topica ============================================================ |
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