timing question
#1
Platinum Member
![](https://www.offshoreonly.com/forums/images/icons/platinum_member_star.gif)
Thread Starter
Join Date: Jun 2022
Location: Lake Havasu City
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Hope this is a relative quickie, and much appreciate the assistance
Help with Timing question;
Here goes, a little background, 496 stroker , blower setup, BM 250 blower and chiller; flat top -3cc as I recall, Teague recommended stage 2 blower cam( very similar to 525 I believe, cam set straight up, with 5* ground in) Degreed cam w/ wheel, all good, matches card, MSD ignition and dist. Lightest weights and springs.
originally set up timing up at approx 28-32, open, on engine stand! think it liked lower end of that scale: (ran really good and set carb) Holley 1150 dominator w/ adjustable mains-( I know yuk) however did install afr’s both tailpipes, so I static set timing WITH 0 degees , with rotor on #1 slightly advanced!
ok without any more delays, As I was starting last couple times, was getting kickback, so slowly retarded dist until it cranked and fired up, all good other than being cold, warmed up engine mostly, checked timing;
Here is the strange part, I get like 10-15 Degrees retarded on the timing light, also seems to run a little rugged, so now as I advance timing and she starts running smoother, and recheck at full open timing, now only shows approx 5* advance @ 3/4 throttle
nextime I start it again kickback! Again I retard, start it, warm up, advance and runs good again, rinse and repeat every time, I have double and triple checked my TDC on #1, of compression stroke( which I I don’t think is the issue, is it possible I have the dist off one tooth or 180*. Knowing the #1 wire lines up! Eagerly seeking help with any/all possibilities needing to be checked.
TU all, for your time
Help with Timing question;
Here goes, a little background, 496 stroker , blower setup, BM 250 blower and chiller; flat top -3cc as I recall, Teague recommended stage 2 blower cam( very similar to 525 I believe, cam set straight up, with 5* ground in) Degreed cam w/ wheel, all good, matches card, MSD ignition and dist. Lightest weights and springs.
originally set up timing up at approx 28-32, open, on engine stand! think it liked lower end of that scale: (ran really good and set carb) Holley 1150 dominator w/ adjustable mains-( I know yuk) however did install afr’s both tailpipes, so I static set timing WITH 0 degees , with rotor on #1 slightly advanced!
ok without any more delays, As I was starting last couple times, was getting kickback, so slowly retarded dist until it cranked and fired up, all good other than being cold, warmed up engine mostly, checked timing;
Here is the strange part, I get like 10-15 Degrees retarded on the timing light, also seems to run a little rugged, so now as I advance timing and she starts running smoother, and recheck at full open timing, now only shows approx 5* advance @ 3/4 throttle
nextime I start it again kickback! Again I retard, start it, warm up, advance and runs good again, rinse and repeat every time, I have double and triple checked my TDC on #1, of compression stroke( which I I don’t think is the issue, is it possible I have the dist off one tooth or 180*. Knowing the #1 wire lines up! Eagerly seeking help with any/all possibilities needing to be checked.
TU all, for your time
The following users liked this post:
SB (11-19-2023)
#3
Registered