Previous thread about this project:
https://rennlist.com/forums/928-forum/239222-110mm-bore-928-engine-project-plans-for-a-7-4-liter-in-the-works.html

Most of the custom work on Jim’s car was done by Todd:
https://rennlist.com/forums/928-forum/166901-i-would-like-to-share-my-supercharged-928-project-car.html

These pictures are a 7 liter boosted motor he is building. I do not have exact details yet (bore / stroke / compression). Todd did say something in the ballpark of 20psi at one point.































Todd is calling this version the "peoples" motor. A 5.5 liter using the stock crank & rods. I have lost count as to how many different variations he has created / tested to find out what works. I his opinion, the stock stroke with a larger bore is the best "all around" setup - something that can be easily created for those interested. He feels this setup is ideal with stock camshafts, heads, intake, exhaust etc....
So to answer the question I know some of you are asking - yes, he is setting up to offer this (or any other combination) to the public. Do I dare say this is the “budget” setup?:








Here is a cylinder being created – he starts with a solid piece of steel:




Here is a family of cylinders sitting next to his test block. He sacrificed the original motor from his car to test various build methods, take measurements etc…




This is Todd’s garage – door behind the 928 is the machine shop




Various pictures of Todd’s personal car – 6 liter with 15psi of boost










To retard timing under boost – Todd created his own manual retard / advance system. He can manually adjust timing in the car while driving if needed.










You can somewhat see the GearVendor drive unit here - making this a 7 speed 928.








“Keep the neighbors happy” valve:


Aluminum radiator end tanks:


Spare parts from the 6 liter









914 Cylinders he made for a race motor








20ish years ago he made this cylinders for his motorcycle. A custom frame with a VW Type 4 motor as a base – now with 350rwhp

 

 

That is going to be scary fast, 7.0 liters at 20 PSI.

 

WTF, you guys up there have some Beastly 928's for sure! Wonder if I can get a relo-package to the land of cheese and monster sharks..... Hmmmmmm?

 

DAMMMMMMMMMMMMMMM!!!

I'd KILL to be able to do work 10% as nice as that!

 

Erik,
What is this "Gear Vendor Drive Unit"?? How does it give 7 gears exactly - I'm intrigued... also how is it controlled?

Very nice work!

Alan

 

With stock wheels and all, that shark is the ultimate sleeper!

 

http://www.gearvendors.com/

As there's no 928 unit listed...which model did he use, and how was it installed.

 

He started with the model designed for the C5 Corvette. He redesigned the case to adapt to the 928 drivetrain. At some point I'm sure there were pictures taken of the mockup assembly in his shop. I'll try to find them.

 

Wouldn't that make it 8 gears then?

 

The creativity of people involved in this hobby astounds me at times; THIS is a true "open source" community-!

N!

 

Todd is great. Honest, straight forward, and a joy to speak to. He always comes through with the very best solution to something that he can think of.

He has dealt with a few issues on my heads that were caused by Fed ex losing them and then damaging them when they found them.

 

I really like the sound of a "budget" 5.5 liter set up for 12-15 PSI and custom sharktuned. I need to get my car over to Wisconsin!

Jim

 

What is the lifespan of the steel cylinders? They would be good candidates for the Nikasil plating to assist with longevity. Now...the 6 liter with twin turbos, that would be a handful!

 

He only needs the motor!