Do I need to bore the case?, Want to install 94mm P&C's in a 1.7L or 1.8L Case Options

[srwilli1978]

Hey All,

I am brand spanking new here. Been a big VW and Porsche fan for years. I have done a fair amount of Type 1 builds but the Type 4 is new to me.

I have an opportunity to pick up an OK roller project 914. The car needs a lot of work but that's the fun in all of this so I am game. It has a 1.7L in it now and with the deal is an additional 1.8L short block.

My question has to do with the engine cases and rebuilding with 94mm P&C's. I am looking at the kits from the Type 4 Store. I know there will probably be some case clearance-ing needed but will I need to bore the cases also to fit one of those type kits?

I plan on keeping the 1.7L in the car and using the 1.8L in a Type 1 swap for my 66 Bug if the case is in good enough shape. I would like to be in 2.3L to 2.5L range when done in each of the motors.

Any insight, links, or wisdom would be greatly appreciated.

[G e o r g e]

could you use the 1.7 heads, pick up 94mm Pistons and have your 90mm jugs bored out to fit?

I'm not suggesting this combo is a good match, but I thought the issue with the 1.7 head 96mm P & C's where that that walls got to thin, a 94mm would leave a little more meat on the bone

but if the OP wants 2.3 - 2.5 ltr using 94's his crank and rods are going to have to change