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-   -   engine swap (https://www.rx7club.com/other-engine-conversions-non-v-8-118/engine-swap-585679/)

slpin 10-09-06 03:26 PM

engine swap
 
i like my t2, but it gets horrible gas mileage and have no torque
so im thinking of putting in a 5.9 cummins.
any tips?

DC13B 10-09-06 04:13 PM

and how could this work?

slpin 10-09-06 07:32 PM

i think it would be the most unique thing ever done.
besides, i could take off in overdrive uphill better than a rx7 can in 1st...

then ill take the hatch glass off and put a gooseneck on the middle

Nihilanthic 10-09-06 08:30 PM

Hes hoping someone might laugh at the same old joke? lol.

slpin 10-09-06 09:52 PM

Well, I thought it might be pretty interesting.
The only problem would be the weight over the front wheels.
But I think for the reliability, gasmileage, and performance...
a used cummins engine can be find for around 2k, and thats with the injector pump...

Nihilanthic 10-13-06 06:04 PM

Youd need a longer final-drive gear to use a diesels powerband unless you have crazy transmission ratios.

Well, that and if you wanna go diesel go find some expensive aluminum audi mofo.

theantirotor 10-14-06 01:50 AM

this is a good idea. so have you done any research on how to actually get this done? no duobt the car would be better off with the cummins.

slo 10-14-06 02:03 PM

A cummins 6.7 weighs 830+ pounds. If I'm not mistaken, which I might be the 5.9 is the same block as the 6.7, but with cast iron instead of alluminum heads.

Thats without the trans, which would also be very heavy. But on the positie side A fully built cummins can make 900 HP and 1600+ trq. My co worker has a 5.9 powered truck and claims to get around 15 MPG no matter how much weight the truck is loaded down with.

cdaleracer669 10-14-06 03:28 PM

my friends cummins gets 19mpg on the highway.. it would be cool but it would make the car extremely heavy, i read a longblock cummins 5.9 weighs 1000lbs

slo 10-14-06 03:39 PM

15MPG was average.

1000 LBS for a 5.9 sounds right. Add in at allot of weight for the trans.



you'll kill the handling :)

DC13B 10-15-06 06:18 PM

most definatly on the weight, u would get good milage considering the car would still be alot lighter then the truck and alot more aerodynamic

NOPR 10-15-06 06:56 PM


Originally Posted by slpin
i like my t2, but it gets horrible gas mileage and have no torque
so im thinking of putting in a 5.9 cummins.
any tips?

lolololololol

gnx7 10-17-06 07:10 PM

I would take the 5.9 and make it into a trike like Jesse James did with the 18 wheeler cab.

5.9 Cummins is 1,000lbs.... When you braked I think you could get the rear wheels off the ground..... he he he

Maybe you should look at the 4BT which is a 4 cylinder Cummins and only about 750lbs ;).

Or get an LS1/T56 and get 25mpg+ on the highway and be able to run 10's, 11's, 12's and retain the 50/50 weight balance.

-MC

PBB 10-18-06 02:25 PM

Be sure to use an 800 pound transmission to handle all that torque: http://www.ttcautomotive.com/English/products/PS13.asp ;)


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