OMC 3 Cyl expansion Chambers

[johnsonracer]

Thanks Tim,

We have an oven at work for that! I can imagine the lady going wacko about the smell!! The oven sure does smoke when she gets up to temp.

I Always pull sleeves out to clean up ports and cut the sleeves.

I will be porting the sleeves myself. I like to do everything myself. I know its going to turn out like I want. Great experience and cant blame anyone else for mistakes.

My first engine I had a shop pull sleeves out for me and they broke them! From then on I do it....

Used to use the acceltelene welder to theat it up. What I mission! Thank god for ovens. I hear that hooded bbq's work quite well also.

[Tim Kurcz]

Yep, I know and appreciate you Kiwi's and your self reliance! Hat's off to you all. Good luck with your new sleeves. But, do you still want one of my exhaust systems? It is designed for that Mod-50 (with the plate). What am I saying? Knowing your culture, I'm thinking you've already got a copy under construction! LOL!!!

BTW: You should easy best the 92MPH NZ kilo record. If you get that engine to work like the factory, you'll easily do over 100. Fred Miller told remembered 106-108 in factory trim, 113-115 with a Vandervelden mod.

Tim

[johnsonracer]

I have a car for sale, hopefully she sells so I can purchase your system.

Otherwise it might be a delve into the up and coming "winter fund" gets quiet here in the Marine Industry..... Any work up there? :-)


I will be making some kind of exhaust to fit it. Have to see what the metal shop has avaialbe. I know it wont be as good as your system, but for the time being as funds allowed it will have to do.

My racing is self funded, I have 4 powerheads that I am trying a different approach on each. So dollars get pretty quickly chewed up buying gaskets, rod bolts and pistons/rings........

If weather allows I will be running that motor up tomorrow. I have modified some 1 3/16 carbs to try. Drilled and tapped in some Mid range jets where they are on the 1inch carbs. I think the 1 3/16 were in the bowls. I am fitting the propper bowls with their own fuel supply for low speed as the standard bowls caused me to die in corners when High speed was leaned off.

I am sure you know about the circuit I am talking about. Took me a few races to figure out why I was loosing low speed when leaning off the high.

[johnsonracer]

Oh...

And whats a Vandervelden mod?

[johnsonracer]

Here you go 850racer

[Seagull 170]

That water is too blue for Karapiro, where is that?

[johnsonracer]

Nelson in south island

[Powerabout]

Guys
If the log style into a megaphone works on a 3 cyl looper why did OMC design the V6 looper with a 3 into 1 and then down to the megaphone after several 90 degree turns?
( not like a Merc V6 which also is a trunk/log style)
Were they trying to improve the reverse pulse timing or something?
If you have ever seen a V6 Looper with the casting cut off it looks wierd
Powerabout