|
Total timing is 46 degrees?!?!?
Hello guys I am new here , nice to meet you all I have a cobra body I purchased from someone I will leave un-named down in florida
I built a tube chasssis and have a mild 302 (stock)with tremec 5 speed and jag rear. My problem is I set the initial timing at 6-8 and at 2500 rpm I have total and it's 46 degrees????? no ping but ??? Is my timing light broken why don't I have holes in my pistons, way too rich also?? HELP Mick in Omaha |
EFI or carb? Is it a vacuum advance?
|
I'd recurve the dist. It would probably be better with 12-16 fegrees initial and about 38 total. That would be a nice starting place. 46 is too much. you may noy have any ping for a number of reasons...long overlap cam, low compression...or you may not be hearing it over the exhaust. It will also depend on how quick it comes in, but I think 46 is too much regardless of when it comes in.
|
Thanks
I have a carb and vacuum advance, edelbrock performer with dual plane manifold. It likes when the timing is around 12-16 initial.
shouldn't timing come in gradually? , I think the springs are wore out or just too soft cause it is maxs out (total timing)by 2700 rpm I would think you want it to come in graduallly and be at total at around 3500 rpm , am I correct? |
The operative thing here is the vacuum advance. It must be disconnected while you measure advance.
|
That's what I was trying to get at about the vacuum advance....I knew there was a connection, but I've never messed with vacuum advance distributors....all the ones I've had were mechanical.
|
Disconnect vacuum advance while measuring total
I am sure this is how I measured it with the vacuum advanced disconnected and the port on the carb plugged. **)
|
Sounds like you just need to change springs. I didn't know they made any that advanced around 30 degrees...
|
How 30 degrees is possible
The little arms (not sure of technical term) have a number stamped on them like 13L or 15L or 18L this is the amount of advance each will add
ie: both are 13L then you will get 26 degrees. of course mine are not ledgable. Anyone have ideas were you can buy distributor parts? Mick |
Mick,
What brand distrbutor do you have ? I think you are missing the bushing that determines the maximum amount of centrifigul advance. The springs & weights deal with the rate of advance,not total. |
Type Distributor
I have a stock 302 with the stock distributor with a vacuum advance the tag on it says
4K 23 E5ZE 12127 BA any info on this appreciated Mick |
I would bypass the vacuum can and cap it and the vacuum fitting and run the initial and see what it is total then. From the # in the dist. I am guessing that you may have been tapped into ported instead of manifold vacuum.
|
I shall return
I will double check total timing and get back to you all
I am quite certain I checked it correctly but you never know. Thank you all very much I will post my results Mick |
Before adjusting, be certain that your timing marks are valid.
i.e. TDC #1 is 0° on the marks. |
TDC = zero
Good Call I double check that as well.
Thanks to all Mick |
Thanks guys . Initial is 16 at idle and at 3500 rpm it is 36 degrees thank you for your help I think I was doing something wrong , I could not duplicate earlier results but thats ok it is dead on now, thanks again to all of you
Mick in Omaha |
Timing
Quote:
|
Go to http://www.reincarnation-automotive....ons_index.html. There is all the information you need for a duraspark dist. Good luck
|
16 Initial and 36 total
Thanks Guys for all your help.
She now purrs like a sick kat Mick |
| All times are GMT -7. The time now is 10:18 PM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: