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Mid 80's Open Class Mercruiser 500 efi

 
Old 01-27-2012, 05:24 PM
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100 octane minimum in the ad. 12:1 amazing. 700+ hp. Cool...
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Old 03-02-2012, 07:13 AM
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It your lucky day. a 337 Scarab just hit classifieds. parting it out. It has (2) of these motors in it. Good Luck
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Old 03-02-2012, 03:39 PM
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Originally Posted by aex
I'm still looking for any wiring diagrams , service/diagnostic and parts info on these EFI systems .
Some OSO a hole sold me spares a two years ago . He screwed me out of the manifolds though , threw everything in a ****ty box that broke in shipping losing some of it's contents and never provided me with the service books he claimed he had .
I'm putting these motors in my old Chris and anything would be of great help in getting these things up and running .
Those computers do not work that great part throttle. I believe the only way you can change any of the tune up is by changing some of the resitors inside. I may have one distributor for that set up. You would be better off installing new electronics inside that big computer. Fast xfi would fit.
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Old 03-02-2012, 08:26 PM
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Originally Posted by CIG3
It your lucky day. a 337 Scarab just hit classifieds. parting it out. It has (2) of these motors in it. Good Luck
On OSO classifieds ?

Originally Posted by 14 apache
Those computers do not work that great part throttle. I believe the only way you can change any of the tune up is by changing some of the resitors inside. I may have one distributor for that set up. You would be better off installing new electronics inside that big computer. Fast xfi would fit.
Interesting point on the part throttle operation . I've got two almost complete spare systems and the original ones ran great before I started the rebuild .
I do agree new electronics would be a step forward .
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Old 03-03-2012, 04:35 AM
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Here's the link.

http://www.offshoreonly.com/classifi...o44269-en.html
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Old 03-03-2012, 08:13 AM
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My drives are presently at Offshore In FLL getting rebuilt , but if I can find a couple of spares for decent price I'll bite .
I've been offered junk for stupid money so far , however there is a gentleman in upstate NY with a pair that may be worthwile .
It seems anyone with a spray can suddenly has a fresh pair lol .
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Old 10-31-2012, 01:44 PM
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Yesterday I spoke with Errol Lanier whom I had met in the late 80's . He is well and building an awesome line of small cats . He could not help , however he referred me to Mel Riggs @ Riggs Marine in Wisconsin as had OSO member Biggus ( Thank You ) So I did call him and he is checking .
I have motors assembled and almost dyno ready .
Here are a few more pics .
Anyone with anything ?
( shop manuals , wiring diagrams , diagnostic info )
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Last edited by aex; 10-31-2012 at 01:48 PM.
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Old 10-31-2012, 01:53 PM
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If Riggs doesn't know I don't think any one will LOL. That man is a mound of knowledge


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Old 10-31-2012, 07:37 PM
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call performance marine in bolton landing new york and ask for jason sarris,he will no or have manuals on them engines .worth a call.
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Old 10-31-2012, 08:07 PM
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Originally Posted by Fenderjack
If Riggs doesn't know I don't think any one will LOL. That man is a mound of knowledge

John jr
Yes , he is an accomplished individual .

Originally Posted by innerrage
call performance marine in bolton landing new york and ask for jason sarris,he will no or have manuals on them engines .worth a call.
Thanks , I think they helped us out way back when the Chris Cat was almost new and Jason sent me a couple of racing tapes .
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