|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
06-03-2012, 07:49 PM | #21 |
Senior Member
Join Date: May 2010
Location: Oshkosh, Wi
Posts: 4,527
|
Re: Detonation Question
Usually the lower the number, the cooler the plug. However NGK plugs are just the
opposite, the higher the number, the cooler the plug. |
06-03-2012, 09:17 PM | #22 |
Senior Member
Join Date: May 2010
Location: Tehachapi, CA
Posts: 361
|
Re: Detonation Question
[QUOTE=itstom;436752]Also, as far as indexing the plugs, which way should the gap be facing?
QUOTE] When I indexed mine I was told on #1 and #3 the gap or end of ground points to 1-2 o'clock #2 and #4 point to 10-11 o'clock, is this correct, don't know but runs good this way. Would be interested to hear if anyone index theirs to a different orientation ..... Vergil
__________________
Bigger fonts to aid in reading |
Sponsored Links (Register now to hide all advertisements) |
|
06-11-2012, 06:43 PM | #23 |
Senior Member
Join Date: May 2010
Location: SPEEDWAY INDIANA
Posts: 4,148
|
Re: Detonation Question
Got the extra distributor done today for Tom. Went thru the unit, bent the springs as far inward ( tighter ) as they would go, installed a new leather brake unit, new contacts , adjusted dwell on both sets on the dist machine and ran it for quite a while wearing everything in.
Also used a model 68 advance unit ( lowest offered for the helmet unit) the 68s are 8.5 degree units while the 40As are 12 .5 degrees . This distributor runs 10 degrees at 3000 rpm ( as sent it ran 10 degres at 2400 rpm). I guess we will see what it does on the engine, can lower the base (side screw) timing a bit ( maybe 6 degrees) and the new brake is adjusted ( for now) at all the way out with new leather . |
06-11-2012, 09:19 PM | #24 |
Member
Join Date: Jun 2010
Posts: 65
|
Re: Detonation Question
Jeez Bubba, I just sent it out Saturday. I figured I'd have a couple days of down time so I pulled some rotten wiring harness out. I guess I better not waste time getting the new one in.
Can't wait to try the new dizzy! Tom |
06-12-2012, 08:43 AM | #25 |
Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,881
|
Re: Detonation Question
One thing about the L-100 cam, it will reduce static compression by over 1 point.
|
06-12-2012, 01:09 PM | #26 |
Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,881
|
Re: Detonation Question
Sponsored Links (Register now to hide all advertisements)
|
06-12-2012, 03:00 PM | #27 |
Member
Join Date: Jun 2010
Posts: 65
|
Re: Detonation Question
Wow. Thanks Ol' Ron. I never thought about that. I was nervous when I put the heads on because the motor had always cranked kind of slow (6v). I replaced cables and cleaned connections and was pleasantly surprised the first time I turned it over.
It never occurred to me that the cam was lowering the CR from what I had calculated. Thank you for sharing your wisdom! |
06-13-2012, 05:52 AM | #28 |
Member Emeritus
Join Date: May 2010
Location: Fitzgerald, Georgia
Posts: 2,204
|
Re: Detonation Question
Neither the L-100 nor any other cam will lower the static CR. What Ron means is the DYNAMIC CR will be reduced as a result of the valve timing.(late closing valve) For an explanation of how this works, read my book.
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|