Yamato 102-302 Mod Kit

[machinedcomp]

Yamato 102-302 Expansion Chamber Kit
Includes: exhaust cover, Steel elbo, Chamber, Folding steering bar, Pipe ring and support bars. Everything is Anodized black or Nickel plated for protection. Header is setup to run a fixed pipe or slide 3.5". Chamber design is proven and very competitive. Pictured is a 302 I just finished. I do have a 102 kit on the shelf (someone ordered then never returned my calls) $1000.00 + shipping.

[mercguy]

Nice!

Yamato 102-302 Expansion Chamber Kit
Includes: exhaust cover, Steel elbo, Chamber, Folding steering bar, Pipe ring and support bars. Everything is Anodized black or Nickel plated for protection. Header is setup to run a fixed pipe or slide 3.5". Chamber design is proven and very competitive. Pictured is a 302 I just finished. I do have a 102 kit on the shelf (someone ordered then never returned my calls) $1000.00 + shipping.

thanks for making this kit available Lee. Come on all you future Cmod (500cc) racers.........buy one of these kits and go racing............

PS: what kind of gasket/seal are you using where the pipe slides up against the header tube? I need one..........

[crfabbro2F]

very nice!

[machinedcomp]

Chamber: Cushion/sealer

Daren,
I use a Silicone O'ring between the header flange and the Chamber.
There not affected by the heat or fuel. I've been using them for head gaskets for years in my Pro stuff. My new 250 engine has them to seal everything, Heads, Exhaust headers, Reed cages and even the engine case. I have the Oring you need in my trailer, I'll just give you one at our next race.

[mercguy]

Daren,
I use a Silicone O'ring between the header flange and the Chamber.
There not affected by the heat or fuel. I've been using them for head gaskets for years in my Pro stuff. My new 250 engine has them to seal everything, Heads, Exhaust headers, Reed cages and even the engine case. I have the Oring you need in my trailer, I'll just give you one at our next race.

GREAT, thanks Lee! Gonna try and run the Cmod at Mossyrock............as soon as I get that little gremlin fixed that shuts the motor off at high speed!!!

you guys gonna run 250's there??

[JBM]

Cmod

GREAT, thanks Lee! Gonna try and run the Cmod at Mossyrock............as soon as I get that little gremlin fixed that shuts the motor off at high speed!!!

you guys gonna run 250's there??

Darren, I thought you were just shutting it down because you were going too fast

[mercguy]

Darren, I thought you were just shutting it down because you were going too fast

ya, thats it!! I did not wanna push the boat over 80MPH!

[seanp3]

Lee

the one you have pictured, do you run the standard gearfoot or something else?

[QUINAULTRACING]

Tj

I sent Tom Johnson a new gear case, Tietze nosecone, and Tietze propshaft. Steve 22-R

[V-racer]

from a-z what is all involved in turning a stock 102 into a mod? is it just bolt ons or is it internal work too?

[mercguy]

from a-z what is all involved in turning a stock 102 into a mod? is it just bolt ons or is it internal work too?

powerhead wise, it is pretty much a "bolt on" deal. You are allowed to drill oil holes in the rods for mod, but if you ever plan to run the motor in stock again, I would not bother, as it is not legal in stock. You are still held to the ''stock" blueprinting specs, with exeption of a few minor details. You do have options of the tower and addition of a low water pickup (or nosecone) on the Yamato 102/302 foot used, to allow better cooling options..........here is a lower unit with the Tietze nosecone added........it can also be removed (epoxied on) later down the road, if you want to convert the lower unit back to stock also....

I'm not sure how Lee routes the water from the lower unit to the stock tower ...............Lee, do you run it to the "nipple" on the rear of the tower?

[QUINAULTRACING]

This power head

very nice!

Hey Chris this is the Brent Backus power head. Yours I will run CSR. Thanks again Steve

[B Walker]

I think there are only 2 significant powerhead modifications allowed for a Modified Yamato vs a Stock Yamato powerhead:

There is no measurement on reed stop height.

The CC's on the head are slightly lower.

BW

[QUINAULTRACING]

Head?

I think there are only 2 significant powerhead modifications allowed for a Modified Yamato vs a Stock Yamato powerhead:

There is no measurement on reed stop height.

The CC's on the head are slightly lower.

BW

Are you saying that you can run a head in Cmod that can not be run in CSH? steve

[mercguy]

Are you saying that you can run a head in Cmod that can not be run in CSH? steve

Steve, just get the motor together and ready for Mayfield!!! We need you there with your 500mod.......