oil mod.

Well I'd like to know what the oil mod is for, the first gen VFFs, is it a tuff job to do, what is needed to do it,and it there a website that gives full details? Lots of ? I know but i really need to know.
Thanks

 

The early Magna/Sabre/Interceptor V-4 engines had minimal oil flow to the valvetrain, the operating pressure being about 15 PSI. If I remember correctly, some, but not all, also had some valvetrain components (camshafts?) that had some surface hardness or surface finishing issues. Combine the surface issues with low oil flow, and parts could wear prematurely.

The modification adds a spacer between the engine and the oil filter . The spacer has two passages that direct additional high pressure oil directly to the valvetrain by means of external oil lines. Installation is pretty easy.

This is one kit that I know about;

Holeshot Performance Products, Inc.

Look under "Honda V-4\Engine Components\Top End Oiling Kit". It shows a decent picture.

 

thank you this is now #1up grade I will do over winter.

 

hi guys, jusy looking at some of the early VFR machinery, I am still learning plenty of stuff about the 5th gens, i have a y2k vfr. anyway are your bikes air or water cooled?
and if they are air cooled what was the first year for water cooled? Anyway i really like the early stuff,how easy or hard are parts to get for your year bikes? tks eddie

 

I put the top end oiling kit by Mark Douglas on my '86 500. That was about 5 years ago and I noticed that his website is no longer up and running. Anyhow, the bolt on modification was a piece of cake to install.

 

check out this web site Daugherty Motorsports - Motorcycle Suspension Performance and Modification he has the oil mod that you need.

 

The original Honda V4 engine "expert":

Dave Dodge - SabMagFAQ

http://www.drp123.com/contactus.html

Dave dodge was part of the original V4 drag racing force in the 80's known as RC engineering.



His web site sucks, always has. He's a mechanic, not a "computer wienie" and his site shows it. He answers the phone promptly and sells a top end oil kit for around 150 bucks. He has both a "drill and tap" kit and an oil filter "adapter" kit for top and oiling cures.

There is no more knowledgeable expert on the V4 engine, he's an "old school" gearhead.

And No, I don't work for him....

 

I have a 1986 VF500, it was my understanding that the oil kits were only needed for 1984 & 1985 but I seen that Stewartj239 has installed one on his 86. Is this something that I should be doing as well? I thought the 86 was redesigned to correct that problem?

 

I put a top end oiling kit on my '86 500 only because I couldn't find anything that definitively said that it wasn't affected. At the time, my bike only had 600 miles on it and I did it more for peace of mind.

The engine design of the '86 500 is basically the same as the '84 & '85. The bikes that were notorious for the top end oiling problem were the 1st generation VF700/750. In '86, Honda fixed the problem with the 2nd generation VFR700/750. I think that this is what you are referring to.

 

I put the Dave Dodge mod on my 83 best money I ever spent.