502 timing V.S. 454?

[roach502]

Any one know why the 502 has a shorter curve than a 454? Mr.Teague claims to set to a higher curve between 32-34 while merc says 28 degrees,i do know that too much will cause detenation and exhuast heat if too little,whats your thoughts on this topic?

 

[Don S]

Re: 502 timing V.S. 454?

Any one know why the 502 has a shorter curve than a 454?

My first thought would be different engines, different cam, different timing for that particular engine. Merc does testing on their engines to find the best parameters for running.

Who the heck is Mr. Teague?
Besides, there are differing opinions about everythiing. Why should timing on 2 different sized engines be any different. And why would/should the timing be the same in your opinion?

 

[Bondo]

Re: 502 timing V.S. 454?

Who the heck is Mr. Teague?

Ayuh,..
I believe that would be Bob Teague, of Teague Custom Marine,..
An ole hand southern Cal. fast boat racer...

 

[Don S]

Re: 502 timing V.S. 454?

Mr Tee ...... Mr. Teague

Sounds about the same,
but here is where my minds eye goes.

 

[roach502]

Re: 502 timing V.S. 454?

don is right,uncanny resemblance except for the gold!

 

[roach502]

Re: 502 timing V.S. 454?

okay heres one for ya, more compression more lift,slightly more duration, do i advance or retard from stock setting?

 

[Don S]

Re: 502 timing V.S. 454?

1. Basically, in this forum I like to keep things stock, by the book, and working for the long run for DIYers, while keeping the KISS principal in mind along with links to informaion and manuals available for them to go by.
2. Things change for those wanting to go fast.
Timing may have to change when doing upgrades and changes. Watching (READING AND UNDERSTANDING) what the spark plugs tell you, will be more valueable than anything you will read here from people with different engines/cams/compression setups.

 

[roach502]

Re: 502 timing V.S. 454?

your right,the motor sitting in my basement,the heads are just sitting on top not even torqued and im worrying about the timing!when i got the gun in my hand and she is running will be the time to calabrate,i do appeciate the help and know how of you guys and the site of course.

 

[tinman565]

Re: 502 timing V.S. 454?

You may wanna be careful Don...Mr "T" pities the fool who makes fun of his boating knowledge