700 hp PT

[bstockum]

As many of you may have noticed, over the last year or so, I have been searching for just the right "set-up to propell my own PT into a real performance car.
I have evaluated all kinds on powertrains and AWD systems are my favorite. The LS-1 V-8 would be very fast, .... but just another chebby swap, ...... ZZZZZzzzzz .

I don't want a manual shift car. High perf turbos and automatics go together very well and that is what I want.

The RWD bell housing I just got for the Jeep Liberty has some potential, then just adapt the AWD units from a Durango to it and there you go. This will require cutting the car open like a fish and reconstructing the thing, firewall to rear hatch!! Just a whole lot of work! ... not that anything I'm looking at is not a lot of work!!

Here is where the current thinking is taking me. ... after reading in one of the sport compact mags about a supercar shoot out, where one of the contestants had built an AWD car by placing another complete engine, trans and subframe in the back of his FWD car. It suddenly struck me that that "COULD" be the most durable, quickest and unusual answer to my search!! Managing control of the two engines is the first task. With slippy converters, it would not be any harder than a boat.



I have already produced fairly mild turbo engines that produce over 300 hp and 330 ft lbs of torque, with a HRC turbo system and large IC. With a little more work and cam change, these engines will run fairly well in the 350 hp range.
so why not double it?! ... Make it AWD with 4 up front and 4 in the back!! ... I call it a "SEPER-8" engine layout.

Because we are using 3 speed autos from the Caravan, we do not need to be concerned about the engines being absolutly syncronized. The converters would have enough slip in them to smooth out any small lag/lead between the two.

I have some ideas on using a PLC computer to manage the engines and shifting duties to keep them close together, while being far appart!!

Anyway, ... that is the current path I am exploring.

By the way, ... the car that did this in the shoot out managed a 0-60 in under 4 seconds and the 1/4 mile in the 10's. Both engines were mild turbo setups and automatics. So I'm going to look into this some more!

I already have the two autos, ... now I just need to do some thinking, .. then cutting!!

How about doing the Convertible conversion, ... making it a two-seater with a drop top?!! ...

Bob

[eric r]

i remember seeing an article for a twin engine DeVille not too long ago doing the same thing. You would lose the "grocery getting" capabilities of the PT.

Eric

[bstockum]

The engine box will be lower than the rear glass, ... so there would be room on top of the box as well as in front of the box. I have not ruled out back seats yet. That would need to be looked at after som fab work. The rear seats would be closer to the front seats, like on many cars, ... if they were used at all.

The radiator for the rear setup would be right at the rear hatch, ... which could be louvered.

The small side glass windows at the rear of the body, would be replaced with some smoked lexan scoops that would bring fresh air into the engine box and cause a slight positive air pressure to keep the air exchanging out the back.

The exhaust from the front would join the rear through an "X" pipe, before exiting as twins, ... which should give a unique exhaust note.

A 20 gal fuel cell, just behind the rear transmission, would have two fuel pumps running the twin systems. The rear engne would be sitting in part of the space the stock fuel tank is now in.

I like the new SRT-4 intakes, ... so I would "can" the PT style intakes for the extra HP of the SRT and this would allow a lower box in the rear as well as make more power up stairs!

Bob

[Powertrip]

Yeah baby!

Are we goona start this weekend Bob?? I just want to be the one with the chop-saw hacking out the floor of the PT....

That would certainly be one heck of a project.... Just add a couple of marine-engine controllers from a multi engine Scarab and away we go....

You know, with the cost of fuel these days, this option certinaly isn't economical. SOOOO, why not do the dual engine mod with a couple of the 2.2L Diesels! =)

Brad

[GregsPT]

What about the weight ? That is going to make it a VERY heavy Cruiser I'm wondering how it would handle.

[bstockum]

The cars weight will increase by ~ 450 lbs. About the same as 2 large adults in the back seat, ... but much lower in the chassis. The trans and most of the heavy parts of the engine are at or below the centerline of the axles!

This should make the weight distribution very close to 50/50. The bulk of the weight is very low in the car, ... Plus!! the HP to weight ratio just got divided by 4 !! ... you have 21 lbs per HP to pull around, .... I will have 5 lbs per hp to push and pull!!

3200 / 150 hp = 21.33 pounds per hp ... stock PT

3600 / 700 hp = 5.14 pounds per hp ... Stockum PT^2

The additional weight will be in front of the rear wheels, so it should not hurt at all. Plus, .... there will be some nice fat 315/40 X 20 radials on the back and 245/40 X 17's on the front!!

The rear engine will be tuned for maximum power down low and the front engine will ge tuned for more mid / top end.

This would be done with staged boost control that would bring the front in more slowly.

ALL hypothetical at this point, ... I'm still working this kind of stuff out in my head.

Your questions are welcome, ... this forces me to look at some things I may not have thought of yet!!

Bring it on!!! ... I may not have an answer, ... but I will be thinking about it.

Thanks! ... Bob

[PT_Hot_Rod]

Originally posted by eric r
i remember seeing an article for a twin engine DeVille not too long ago doing the same thing. You would lose the "grocery getting" capabilities of the PT.

Eric

I could have sworn it was an eldorado. I saw the test run on the drag strip with it. It was insanely quick. I like the idea

[eric r]

It was an Eldorado. My bad.
http://www.moslerauto.com/mosautoweb...n_announce.htm

eric

[JOEM]

Originally posted by bstockum

I have already produced fairly mild turbo engines that produce over 300 hp and 330 ft lbs of torque, with a HRC turbo system and large IC. With a little more work and cam change, these engines will run fairly well in the 350 hp range.Bob

Really? You've achieved over 300 HP already with a Cruiser engine in a Cruiser? I thought Brad was leading the race to 300 HP. Guess I'm 'way behind the times. Was it in Ant's Cruiser?

[Mark1]

Originally posted by PT_Hot_Rod


I could have sworn it was an eldorado.

They had them for sale in the DuPont Regestry last year as well.