Piston Mfgr: Silvolite L4-119

Application: Isuzu 82-85 G200Z (Chev S15 LR-1)

 

Flat Piston

88mm (87+1mm over)

22mm Wrist Pin

36.52mm Compression height

 

Will work nicely (great squish) with stock L28 rod, LD28 crank, and stock Felpro HG. Gives 3.03 litre @ 9.75CR

 

 

Edited May 2, 20159 yr by Blue

Do you know what materials are they available in?

I can only find cast but I did not dig much.

 

 

 

Curious that you are using he shorter rod-130mm?

I am just running numbers presently.

 

The VW 88mm 2.9L design and the Isuzu 88mm 3.0L design are alternative enhancements whose priority is to use as much of the stock components (especially HG).  

 

• The 88mm allows for boring of nearly any block without worry.
• The VW 88mm allows for improved performance with just a piston swap and some machining.
• The use of stock rods in the Isuzu Stroker saves having to hunt L24 9mm rods.
• The VW and Isuzu pistons are not expensive.
• The squish works well with stock HG and P90/79 heads
• No need for expensive HG's from Japan

 

The only extra work is rod small end enlargement to accommodate 22mm wrist pins. They can be pressed or floating.

Offset boring the small end helps to lower VW piston deck height to allow for a 1mm offset grind of the crank for more stroke.

Of course the 3.0litre requires the LD-28 crank.

 

Offset grinding the crank with the Isuzu piston gives 3.07 litres @ 9.86CR and still keeps  a great squish if the small end bore is offset south 0.5mm

 

I plan to build the VW version this year. I also have the kit to do a traditional KA-24/L24Rod/LD-28 stroker. The isuzu will happen if I ever come across another LD-28 crank.

Edited May 2, 20159 yr by Blue

I believe I have two V07 cranks right now. I would have to verify this. I will probably on use one if I live long enough. When you get ready...

Or you might could do this

 

Those diesels are gone already

Oh well, worth a try