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| Fireball V8 215 reverse rotation dist... |
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[email protected]
New member
Username: raindog
Post Number: 1
Registered: 07-2007
| | Posted on Wednesday, July 18, 2007 - 05:02 pm: | 
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I've been told that a mechanical advance distributor is preferred over a vacuum advance distributor for marine applications. My Gray Fireball V8-215 (now with a 4v Holley), reverse rotation, flywheel aft, has a vacuum advance AutoLite IBP 4105A distributor. Does any one know of a proper replacement that uses mechanical advance system? Did Gray equip this motor with a mechanical distributor? |
J.B. Castagnos
Senior Member
Username: jb_castagnos
Post Number: 261
Registered: 07-2002
| | Posted on Thursday, July 19, 2007 - 08:44 am: |
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Check your distributor to see if it has advance weights. Most used both mechanical and vacuum or just mechanical. You can just leave the vacuum off if it has the weights. A boat is always running loaded and the vacuum wouldn't advance anyway. It would be best to use a timing light that reads total advance and check it at max rpm. Just a guess, I would think about 32 degrees total advance if you can't find specs, usually no nmore than 36 degrees. Too much timing will be devistating, damaging pistons and rings. |
[email protected]
New member
Username: raindog
Post Number: 3
Registered: 07-2007
| | Posted on Thursday, July 19, 2007 - 10:38 am: |
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Thanks much JB. This correlates with other information I've received.
Do you think the springs or weights are different between a straight mechanical advance distributor and one with vacuum advance? |
J.B. Castagnos
Senior Member
Username: jb_castagnos
Post Number: 262
Registered: 07-2002
| | Posted on Thursday, July 19, 2007 - 11:12 pm: |
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It may have less mechanical with the vacuum, that's why I would try going with the total advance. |
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