BritishV8 Forum

General Category => Engine, Transmission, & Rear Axle assy. => Topic started by: dartonit on June 06, 2008, 05:46:47 AM

Title: Buick 300 crank to SD1 3.5
Post by: dartonit on June 06, 2008, 05:46:47 AM
Hi,

I tried to read the whole articles of it, but i'm not to good in english, so there is one thing i don't understand.
Especially the connecting rods, and pistons. Can i use the old ones, or i have to use different (couse the longer stroke).

Thanx
Title: Re: Buick 300 crank to SD1 3.5
Post by: NixVegaGT on June 06, 2008, 09:56:37 AM
Connecting rods: Yes, used is good. Actually really good. They are forged units and nice.

Pistons: NO. You need new ones to make up the difference in stroke.


Total deckheight (center of the crank to the block top): ≈227.5 mm


Connecting rod length (center to center): 143.75 mm
Buick 300 stroke: 86.36 mm/2 = 43.18 mm

143.75 + 43.18 = 186.93

≈227.5 - 186.93 ≈ 40.5 mm

That is the piston height you need. ≈ 40.5 mm (1.59 in.) compression height for the piston.
Title: Re: Buick 300 crank to SD1 3.5
Post by: dartonit on June 07, 2008, 05:35:12 AM
Thanx!
Title: Re: Buick 300 crank to SD1 3.5
Post by: dartonit on June 08, 2008, 06:54:19 AM
By the way, the piston with this compression height must be custom, or i can use different one, specially low compression Range Rover?
Title: Re: Buick 300 crank to SD1 3.5
Post by: dartonit on June 08, 2008, 07:36:40 AM
Sorry, i have already understand. I found the possible pistons at D&D Fabrications.