Gvi motor

Anonymous-0 · May 28, 2013

I have a propanes GVI and I was wondering if a 605 crank would fit good in a 425 crankcase?

jd plowboy · May 29, 2013

yes it will i have one that was made into a 605 that way

Anonymous-0 · May 30, 2013

So to make this idea work. What do i have to do beside put a 605new crank in?

toolz · May 30, 2013

A 425 with a 605 crank will get you about 510". You will need custom pistons for the longer stroke. If all you want is about 510", it"s a lot easier to use 504 jugs and pistons on your stock bottom end to make it a 504. The easiest way to make a 605 is to use 605/403 jugs, pistons, and pushrods with the 605 crank, or just bolt in a 605.

Anonymous-0 · May 30, 2013

I have 504 jugs,

toolz · May 30, 2013

504 jugs are the same bore as a 605, but are about 2" shorter. Using 504 jugs with the 605 crank will get you a 605, but you will still need custom pistons for the shorter 504 jugs.

Anonymous-0 · May 30, 2013

Could i use 605 jugs, 605 crank and use my current pistons

jd plowboy · May 30, 2013

get you three 403 jugs, 6 403 pistons, and 12 403 push rods. if you find a 605 power unit it will be the same parts.

toolz · May 30, 2013

425 pistons are a smaller bore. 504 pistons have the wrong compression height. If you use a 605 crank, you will need 605(403) jugs and 605(403) piston, unless you get custom pistons.

MM diesel · May 31, 2013

I always knew that "G" pistons had the same bore as a 336/504 piston, but I never thought about the compression height being different. I learned something today, but I will still stick my diesel MM toys.

Gvi motor

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