Mid 80's Open Class Mercruiser 500 efi
 

Any info , specs or brochures floating around on the 1986 Merc 500 or 540 efi i/o pkgs that were used in the Open Class boats ?
Actually the 500s were used in APBA Open and the 540s in NPBA E Class .

Here is a Merc 500 EFI brochure...

about a year ago I was wondering around fort Lauderdale and there was a pair of them sitting in Jerry's marine it could have been two years ago. Prbably still there sitting on the rack.

Many thanks !

Funny, the ad says it uses a no.3 but is pictured with a no.4

Anything else out there ?
I'd like to find wiring diagrams , parts books , manuals and anything else I can find .
The bellhousing tag is stamped 540 EFI Nov 1985 .
Thanks for reading this , perhaps some one will have something or know who to call .
My resto project is moving forward .

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 .

Have you tried Mel Riggs? Riggs Marine Eldorado, WI.

Good luck, cool project.

Kurt

Also try Keith Eikert. Lightning Performmance

Wow 12:1 compression, those things have got to have a mean bark!

100 octane minimum in the ad. 12:1 amazing. 700+ hp. Cool...

It your lucky day. a 337 Scarab just hit classifieds. parting it out. It has (2) of these motors in it. Good Luck

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.

On OSO classifieds ?

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 .

Here's the link.

http://www.offshoreonly.com/classifi...o44269-en.html

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 .

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 )

If Riggs doesn't know I don't think any one will LOL. That man is a mound of knowledge


John jr

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.

Yes , he is an accomplished individual .

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 .

Mel would be my first call too, but a very close second would be Dave Stiff at Innovation Marine in Sarasota, Fl.

I have a pair of those engines at Innovation now, just waiting for me to finish one of the restos I have underway.

BTW Dave was THE guy at MerCruiser back in the day and probably wrote the manuals you are looking for. Tell him I said hello! Good luck with your project.

How did you make out?

Not good , and everyone I contacted tried .
I bolted 1150's on 'em.