John..

For those of you who were at Wichita, you probably got to see the new twin turbo car. For those who were not, it is finally done. We had some last minute sorting to do, but this car was put on the road last Thursday and made the trip to Wichita without issue (except for a broken window regulator I fixed in the middle of Ill). That is 1,600 miles put on the car just two days after the conversion was done. How is that for reliability? 90+ degrees and 90% humidity all the way through Missouri and Kansas.

The car runs really well. Right now it is boosting just a tick over 10 psig and has a very good torque curve. My estimate is about 400 crank horse with slightly over 400 crank ft-lbs. Don't start on me about not having a dyno sheet yet, I don't want to hear it. I am not about to get into more of last years "discussions" regarding turbo 928 HP and torque figures. We didn't do the dyno because I am having issues with the 3 speed automatic holding the torque. It needs to be gone through and serviced. A 5 speed would have been a blessing, but this car was so clean I could not pass it up.

So, I have the design about perfected. There are a few things I will change to make it better, but it is basically a fully functional 10 lb. animal right now. This prototype went from nothing in the middle of May to what was presented at Wichita this weekend. About 6-7 weeks of very hard work and dedication to making a goal.

I have a fab shop lined up to be able to reproduce the system should there be any interest. Those interested, contact me for details. Poking around over the weekend on the newer cars. I'm fully confident I can make a nice twin turbo S4 setup....now that would be interesting.

Should there be interest, I will dismantle the kit from Goldmember and we will make jigs around the stand engine for reproduction purposes. If not, I will sell Goldmember. regardless, Goldmember will be sold, it is just a matter of when and for how much...

Shane

Nice job!!!

Old & New

John,

-why not just drop a 4-sp into her?

-you wouldn't really sell without setting yourself up for replication?

bcdavis

Very cool!

It's nice to see people just go to work, and get things done.

You should totally make a kit.
I know that there will always be people with interest.
Keep the price similar to the MURPH 16v kit, and you
will have some people that will prefer a turbo over a SC.

But if you are ever bored, you should really consider a s4 turbo kit.
I think a lot more people would be interested...

John..

Seemingly, I think my wife has the next 6 months of my life well planned out for me...so I don't think I will be at liberty to expand my horizons in the garage for quite a while...

I do plan on making fixtures for the system before selling the car. It would be silly for me not to do that step.

The part I love best is that this kit is totally stealth, from the top side you can hardly tell anything has been done to the car. Not as stealth as a stroker, but much more stealth than a centrifugal or positive displacement blower.

I'll have to get some pictures up for you guys. I was dissapointed that Murf and Andy were not in Wichita... maybe next time. If I do attempt this sort of thing as a business, the 928 is just the tip of the iceburg...there are much bigger and better horizons out there and the 928s are going to continue to vanish, but if I can do a twin on a 928, other cars are much easier, like say an F355 Ferrari, Corvettes, etc.

The business guy in my tells me to engineer a good low cost kit for a highly mass produced car (i.e. Honda, Toyota, Nissan) and make it up on volume, but the engineer and car enthusiast in me wants to do the more unique and high end projects. I know some of the Ferraris have been done, but these are rare setups and are quite costly. Ford or Ferrari, the principles are all the same.

John..

N/O...I don't think the 4spd is a direct swap, think you have to do the tube with it, but I agree it is a much better trans. That 1st gear on the 3 spd is soooooooo wide it is crazy.

Zandramus

John.

Congrats... What dont you like about the 3 spd. 0 - 65mph in 1st, 65 - 100+ in 2nd. I had a chance to race my brothers 84s this weekend and even though he supposedly has more hp I found the cars to be very even in their acceleration.

I also spend 170 bucks getting mine aligned this weekend, took the guy almost 3 hours on a hunter dsp400 machine, The car was way out of spec beforehand since I had the transmission out and had done the front ball joints. I am really happy with the way it drives now. I have 2 more mechanical things to do before I start on the interior restoration. Motor Mounts, and shocks springs. Since I got 1 year free alignments for it I can get the shocks springs in and get the ride height correct and get her re aligned for free.

I have a spare 3 speed up here now so that if the current one starts to go Ill just rebuild that one so my time out of car is just the weekend. no more car down for 1 year crap ever again. Supposedly they should take the HP that you are talking about, however I would think you would want to get a separate trans cooler, as I have misgivings about the factory cooler and I may change that out as well to see if I get a little better temp range in the trans oil.

bd0nalds0n

For the neophyte, can someone compare/contrast the advantages/disadvantages of a turbo vs. SC?

hacker-pschorr

Sorry, Murphy and I spend a good chunk of the weekend working on my car. We were both pissed we were not able to make the run down and see you guys and the car. It's good to know at least one of the boosted cars made it down.

Awesome to here you have the 2nd car running.

John, What condition was the car in when you started?
Mileage, engine maintenence, etc....
What year car is it?
Did you convert this one to MAF as well or keep the barn door?

We are going to find out the HP through the barn door with boost. My game plan is to convert to MAF over the winter when I do a 4.7 swap and install euro heads/intake.

PICTURES, PICTURES, PICTURES!!!

Rob Roy

I think that this is great - any type of performance enhancers for the 16v engine are well received. I'd love to see some pictures. As this project develops, so will my interest. Obviously longevity, performance, and price will figure in to any future decisions, so keep the information flowing.

Great Job!

PorKen

Very cool.

How are the turbos with the 3sp low gear?

If you need some help photo-editing/posting pics, I'll help.

goldknight

John I have a 3 spd auto in my garage just sitting there. Its out of a 84 euro but came out of a 80 us before that. She shifts strong and had no slipping when behind the eruo motor.

If you interested in buying it PM me.

John..

Well, off the line you get full boost by about 3,500-3750 RPM in 1st. Roll on at higher loads and the boost builds strong and hard. 3rd up a hill and you have all the boost you can handle before 3000 RPM. This car has 110,000 on the clock. Not sure on total maintenance, but it is a strong motor for sure. This has the hot wire setup. You guys should use the same fuel management on the Vortech setup, it is really a lot better for transient response. You could probably take my setup with the exact program and the car would run and drive just fine.

I'll try and get some pictures taken tonight and see if I can get them posted up on here. There are a few things I want to change, like the feed pipes to the IC, right now they are too low and I can tuck them up another 2" or so. Still a lot of little things that can be optimized, but I told myself I would be in Kansas and I made it (by the skin of my teeth).

Quick Carl was there with his boys to show off his entry level kit for the CIS cars. We shot the breeze for a while. I thought for sure Murf and Andy would be there, but I know how it goes, because I almost didn't make it either....it was literally down to the minute on deciding go or no go. My ears were still ringing this AM after driving the Goldmember 800 miles without any mufflers.

This car is nearly as fun as the Callaway, in fact somewhat more fun because I can drive it and not worry about it. The other car is a garage queen and I don't put the miles on it, plus it has historical significance and has been in my family for about 15 years.

hacker-pschorr

When you have time, shoot me the info. I'll talk to Tim, maybe make it an option in the kit. Eventually there will probably be different levels of the kit to add more boost (pullies, fuel injectors, regulators etc...) maybe offering the MAF and the machine'd pieces to mate up to the intercooler and TB. My car is the test mule, so we'll see.

Since I plan to use my car on the track more than the street, I'd like the MAF just for the tunability and being able to plug in a laptop and keep an eye on things.

Does that setup use the stock injectors or can you upgrade to the more generic Bosch S4 style?

Lagavulin

Good job, John.