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Wardog's Avatar
 
Join Date: Oct 2002
Location: Santiago- Chile
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weight balance on a porsche 944

HI:

Iīm making some serial modificacions to fix my 944 NA, it has no engine, and Iīm going to use a nissan skyline 240 rs fj24 turbo engine, itīs a 4 in-line so it fits, but, I have to get rid of the porscheīs clutch and torque tube cause I dont know if it can handle the 300hp of that engine....anyway

Does it afects if I modify the weight balance?? cause 944īs are 50/50 balanced, and if I do this the car will be most like 70/30 or 80/20......does it afects the car to much??? I was thinking on putting some weight on the back after that so Itīll be 50/50 again, but Iīd lose power......what do you think??

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Old 08-10-2003, 11:09 PM
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Why don't you just put the Nissan engine in a Nissan?
Your project sounds like way too much work for way too little end result.
At the end it will be yet another " well, I just have to re-engineer this part and it will almost run" project = no fun
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Old 08-10-2003, 11:24 PM
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oh jesus.
if youre comitting this sin you might as well drop an lt1 in. you can keep the torque tube and tranny where it is.
and yes 70/30 is way different than 50/50
and if you added weight to the rear to rebalance it(!!!?) youd have to add like 800 lbs. at which point your power to weight ratio would only be slightly better than a 951, and then change brake set up, suspension etc to compensate
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Old 08-11-2003, 02:45 AM
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Must have some long winter nights in Chille. Sure could use some cold weather up here!

Keeping anything running down there must be a challenge.
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Old 08-11-2003, 07:28 AM
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Is a skyline 4 really that much heavier? I thought the weight issue was more with six's or eight's?
I would hesistate to add weight or screw with the balance, those are the beautiful things about the breed.

If it is a matter of "this is what I got so this is what I'm using" then you may want to move as much stuff to the rear "wells" as possible...ie battery, stereo stuff(if any mods)...Maybe even larger tires in back and smaller in front.
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Old 08-11-2003, 08:04 AM
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but would afect so much if I dont put any extra weight in the back and just put the engine?? the thing is that I wont use the torque tube and trans from the porsche, Iīll use the complete skyline sistem.....gearbox, toque tube and diferential, I think that it wont be afected so much, but Iīm not very sure......


The other thing, how much power does the toque tube from a 944 NA can handle?? can stand a 300 hp engine?? or Iīll break it??
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Old 08-11-2003, 08:22 AM
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I've never seen a 4cyl Skyline. I thought all of them were the 2.6l I-6 DOHC.
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Old 08-11-2003, 09:12 AM
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any way....how much torque can the torque tube and transmision handle?? the fj24 itīs similar to the 944 NA.....itīs a in-line 4 cyl.....and itīs 2300cc...turbo....with 300 hp......and I think that they weight about the same.......I dont want to change the trans or the torque tube......thatīs why I need to know the max torque and hps that a 1986 944 NA can handle.

Thanks any way
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Old 08-11-2003, 09:13 AM
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Quote:
Originally posted by TCMdocs944
Is a skyline 4 really that much heavier? I thought the weight issue was more with six's or eight's?
You'd be going to a cast iron block vs. the aluminum block. I don't know what kind of weight difference there would be, but it could be a huge difference.
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86 Red 951 - Turbo Twists, otherwise stock for now
83 Black 944 w/86 951 front end - still down and out, but coming back slowly.
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Old 08-11-2003, 09:14 AM
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then the skyline itīs lighter....thanks......Now I need to know the max torque and hp that a 944 torqe tube and trans can handle.....
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Old 08-11-2003, 09:17 AM
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The torque tube and driveshafts of the standard 944 can handle well in excess of 300hp. There are guys out there with standard tubes with over 400hp and no issues. I'm manufacturing one from 6061T6 aluminum that is 24+lbs lighter than stock, it's in a 400hp street car with no issues, so I seriously doubt you'll twist one. The tranny will handle lots of hp as well. That said, it IS NOT going to withstand longterm abuse like that seen on a drag strip. If you want a drag car, you may well have to find another tranny.

For those who doubt the use of aluminum, in my research, I found that the driveshafts of Pro Stock drag cars are made from the same alloy. Instead of using 1/4in wall like I do, they use 1/8in wall, on a smaller diameter and those guys generate way more hp and torque than we ever will with anything reasonable.
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Old 08-11-2003, 09:47 AM
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Quote:
Originally posted by BlueQuestTSi
I've never seen a 4cyl Skyline. I thought all of them were the 2.6l I-6 DOHC.
they are!
the bottom of the line skyline is a 1.6 4 cylinder n/a tho but it might as well be a diesel
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Old 08-11-2003, 03:35 PM
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why not just put in a 951 engine
i got 303 hp 315 ft lbs to the wheels with $2000 in mods
Old 08-11-2003, 09:37 PM
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Quote:
Originally posted by emwporsche
why not just put in a 951 engine
i got 303 hp 315 ft lbs to the wheels with $2000 in mods
what did that include?
dyno sheets?
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Old 08-12-2003, 01:32 AM
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i dont know how to post a pic!
i have it scanned but i cant drag it
Old 08-13-2003, 10:20 PM
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vott does ziss do?
 
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use the 'post reply' button on the right of the forum instead of the quick reply box. press the img button and you can add a picture by typing the link or location into the addr bar and clicking o.k. I think you can figure it out from there
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Old 08-13-2003, 10:26 PM
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i think this is it

[IMG]http://photos8.msn.com/imageserver/image.aspx?Image=HcZNnT9kkUjlZQ!vIW6YJO*K2amkwEP47 jSI1DxglaeR6KT2h5qiVY3V96NgBSq0zADAlAjdpTnWBt8J9bj ThTVPBeZbZDzkKhgUEbMN12NsR1!FJ0JxD5fvyevSabOgadTqo y!*biDI!cjpg5EXSA$$[/IMG]

it has:
kkk27-6 hybrid turbo
maf
digital air fuel controller
weltmeister chips
shim
ansa muffler
widefire head gasket
adj. fuel pressure regulator

and some things i cant remember!
Old 08-14-2003, 02:40 AM
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thats not a picture- damn it!
Old 08-14-2003, 02:41 AM
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vott does ziss do?
 
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LOL, that didn't work. hmmmm, lemme see what I can do. I actually haven't used the feature yet but maybe I can figure it out.
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Old 08-14-2003, 10:45 AM
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vott does ziss do?
 
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methinks the URL is not quite right as I couldn't get it off their site. do you have the image on your h/d?

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Old 08-14-2003, 10:47 AM
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