Engine/trans specs for different year models?

[Rob'Z]

This is my first post on this forum, hopefully it is in the right section.

Here is my question: Are there any differences in specs (power, torque, gear ratios, ECU, etc.) between the different year models? I have heard the ECU is different on the '98-99 vs '00 and up. Something to do with the speed limiter IIRC. Other than that is there any significant changes? The reason I ask is that I am contemplating taking on a very unique project. My goal is to put two Hayabusa engines in a Fiero. The layout is mid engine/RWD with the engines in parrallel driving a 300ZXTT 3.69:1 or lower(3.27 etc.) LSD differential. I know it sounds like a lot of work but if I love projects of this nature. I appreciate any info/advice you have to offer. Thank you

Robert

 

[Lucky34]

Thatd be pretty nice

I heard of some college putting a busa engine on a golf cart..... hehe.. must have been one sweet ride.

 

[hayabusa_83]

yeah, i couldnt find a decent busa motor, so me and a friend are throwing a gsxR-1000 motor on a shifter kart!

 

[Rob'Z]

So does anyone know if there are any differences in specs between year models?

 

[Mr Brown]

There are differences, 99 and 00 have a different fuel pump setup, for one, and the ecm was changed at least once, but IDK what year. Best bet is to find 2 from the same year. Also if you find a 98 Busa, let us know.........

 

[shenoyp]

As what Mr. Brown said... 88-00 have different fuel pump setup... Also the ECU is de restricted. Apart from that the displacement, the stoke, the gear box have all remained the same over the years!! Putting two powerunits into a car is not a really good idea... will be very difficult to balance the performances of the two engines... improper balance will result in reliablity issues!! Dont mean to discourage you or anything ... but just thought id share a thought!

...Oh!! and busa's were not around in 98!! ...first year of production is 99

 

[shenoyp]

...and welcome to the board

 

[Rob'Z]

'99 was the first year then, OK. So basically all the mechanicals are the same? No changes in gear ratios or anything? That is my main concern. I will definately be looking for two of the same year model but in case that proves too difficult I wanted to know what years (if any) were different. Thanks for the input.

 

[Mr Brown]

I think the electronics are different, 16 bit vs. 32 bit ecu, but the internals are the same bore, stroke, cam timing, crank/flywheel weight etc. I'm not 100% on this, but I believe it to be the case.

 

[Rob'Z]

Here is a collection of info I have put together for the project...



The Plan:

To install two Suzuki Hayabusa 1300cc engines in the Fiero. They will be mounted longitudinally in the engine bay and will be connected together with drive chains. There will be a short driveshaft connecting the engines to a '95 E36 M3 3.15:1 LSD differential. Custom halfshafts with M3/Fiero ends will be fabricated.

The specs:

2550 lbs
mid engine/rear drive
6-speed sequential transmission
2.6L 8 cylinder
10,800 RPM
350 HP
210 TQ


For comparison an S2000 ('00-03) is a lightweight, small displacement, high revving, hight HP, low TQ vehicle.

2800 lbs
front engine/rear drive
6-speed manual transmission
2.0L 4 cylinder
9000 RPM
240 HP
153 TQ





10,800 RPM redline, 275/40/17 rear tires, 3.15:1 LSD diff


9000 RPM redline, 225/50/16 rear tires, 4.11:1 LSD diff


Notice that even though no specs are the same both cars have the same overall 1st gear ratio. Both cars will hit 53 MPH at 9000 RPM in 1st gear. Given the weight and power advantage the Fiero should be very quick.

The S2K has a peak of 136 WTQ at 6500 RPM while the Fiero will have 136 WTQ below 3000 RPM and a peak of 188 WTQ at 7500 RPM.

The S2k has a peak of <200 WHP at 8000 RPM while the Fiero will have >200 WHP from 6000 RPM and up with a peak of 300 WHP at 9500 RPM.

As youcan see from the graphs the Fiero will be a rocket from ~40 to 160 MPH. Acceleration times will be based on how fast you can shift.

A side affect of the lighter weight engine/trans package, aside from the obvious power/weight ratio, is that the car will have a weight distribution very close to 50/50.

The cost will be ~$7500
5000 for both engines/transmissions
500 for M3 diff
2000 for fabrication and misc parts


And if 300 WHP gets boring I can always add 8 psi to each engine (no internal mods) for >550 WHP!!!








I just won a 2001 engine package on ebay so the project is a GO! One more engine, a rear diff, and some fabrication to go.

 

[Rob'Z]

Teardown pics.





Obligatory "standing in the empty engine bay" pic.

 

[riironman]

hmm i hope the motors will be in perfect sync

 

[Bergster]

Looks cool to me. Boats have two, three, four engines. They work fine together. I'd like to hear what is sounds like. How are you going to do the pipes?

 

[_ZeF]

That's an awesome project... Keep us posted!

 

[Rob'Z]

The exhaust will have mutiple configurations...

1. A Y-pipe going into a single cat converter for emissions testing, no muffler.

2. A Y-pipe into a single muffler

3. An X-pipe into two mufflers.

4. Two separate exhausts, two separate mufflers.


It will be set up so I can swap the different designs easily to see how they sound/perform.

 

[Rob'Z]

The stripped interior ready for a cage and some Sparcos...


Here are some pics of the two engines. I hope they get along well together



Still with room to spare.

 

[Rosco]

I'd say the chains will be stretching and failing all the time if the motors aren't in perfect sync.
Have you considered fluid coupling like a centre diff from a Jap 4WD. A little more complex but would solve all the stress issues you'll run into.
And make sure you leave enough room for the turbos

Best of luck

 

[Rob'Z]

Not enough room for any of that fancy stuff. The chain and sporocket setup will barely fit.

There will be room for turbos don't worry. That is only a plan if the car isn't fast enough with 350HP pushing ~2550lbs.

 

[PaceMaster]

What you are doing is AWSOME--please stay around ---- we wanna know how it works out--

Ps my best friend has a 600cc Honda car-- 2 cly front wheel drive--- we have talked for years about what it would take to put a 1000cc or up engine in that-- MC engine 6 speed..Ohyea !!

 

[Rob'Z]

My friend came over today and helped me make the car look worse. We removed the front and rear windows and the roof panel. The windows will be replaced with plexiglass to save weight and the sunroof top will be replaced with a hard top to save weight and improve looks. My neighbors are stopping by tomorrow to give me a quote on a roll cage.

Sorry for the blurry pics, I'm still getting used to the new camera...