drive shaft?

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willmoodom
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drive shaft?

Post by willmoodom »

for guys doing the 4g swap in a rear drive or starquest platform, what are you doing for the driveshaft? especially if engine is moved forward a few degrees?
89coltgt
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Post by 89coltgt »

You have your driveshaft lengthened whatever distance you moved the engine foward.
DJpowerHaus
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Post by DJpowerHaus »

a few degrees? You mean inches?

My dad used a lathe to machine off my yolks so we could reuse them. Made a pipe 2" longer than the one he cut off and that's all it took. My uncle welded it and I paid to have it balanced.

I have one (that same one) for sale. Its $100 and has been extended 2", painted and balanced.
Image
Getting the engine bolted in is about 10% of the way there.
The next 80% can go quickly with help and skill.
That last 10% takes about as long as the 90% that came before it.
willmoodom
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Post by willmoodom »

DJ, I'll take that drive shaft off you. PM me your details.
willmoodom
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Post by willmoodom »

Disregard that DJ. I may just go with the rx7 tranny. Mines is on it's way out anyway.
DJpowerHaus
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Post by DJpowerHaus »

I have a spare 87 StarQuest transmission I could sell you too. Sure you want to go to all the trouble of the RX7 transmission right off the bat? If I were you I'd keep the transmission stuff simple for now. I have an RX7 transmission for sale too if I can't change your mind. Since you're so close... free delivery.
Image
Getting the engine bolted in is about 10% of the way there.
The next 80% can go quickly with help and skill.
That last 10% takes about as long as the 90% that came before it.
TsTKl
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Post by TsTKl »

just wondering why you wouldn't just make a spacer block with some extended bolts to get the extra 2 inches. I've seen it done with success, and I don't think balancing should be an issue since you don't compromise the factory driveshaft in any way. Also, if your spacer is semitrical it shouldn't be off by enough to have any real negative effects. The drivetrains overall weight shouldn't be effected greatly by any differences in the distribution of the denity of the material you use. Just seems much easier to me than basically creating a custom driveshaft. Although you might have to relocate your U joints depending on the design of the driveshaft.
DJpowerHaus
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Post by DJpowerHaus »

You could do that. I know on the Starion and most cars there is a lip to center the rear flange just like a wheel. Any spacer would need to have a relief made into the spacer to account for this on both ends.

If its an option go for it. I've always found driveshaft shops easier to find than machine shops willing to turn down a piece of metal like that.
Image
Getting the engine bolted in is about 10% of the way there.
The next 80% can go quickly with help and skill.
That last 10% takes about as long as the 90% that came before it.
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