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B230+T5 3k rpm shake

wcirco said:
One thing to note: 240s and 740s have some sort of driveline dampening on manual transmission cars( ie giubo or rubber coupled rear shaft) With a T5 swap the lack of any damping allows for engine harmonics to resonate in the driveline.
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As mentioned earlier, there are 240s with M46 and no guibo. I parted one out, and it did not vibrate when i drove it.
 
My current m46 came from a 86 245 with a dogdish flywheel and a 3 u-joint, but rubber dampened rear driveshaft. Though I am not using it, I stuck with my stock aw70 solid rear driveshaft with the m46 front piece.

On a similar note I have everything I need for a T5 swap in my 240, which I will be doing at some point after I put in the 0.80 5th gear set. I have a aluminum 47" coleman shaft and standard undampened yoke and hope to not experience this, but i'm not holding my breath.
 
mikep said:
As mentioned earlier, there are 240s with M46 and no guibo. I parted one out, and it did not vibrate when i drove it.
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my 240 turbo had a m46 with u joints only but the rear driveshaft also had a rubber damper built into it.
 
New attempt on the 140, won't know results for a bit as I gotta get it running.

Way back I had a 1pc alum from a local shop on there, sold it and went 2pc with a damper, only to find the rattle was no better, but it also induced some added angles I didn't like. Just ordered up a Coleman HDC shaft, gonna throw that in with the V6 balancer I already have, see how it does.

Also, for part numbers...
1310 rear flange for our axles is a Spicer 2-2-551. Had one in the bin from a shaft I pulled a while back, confirmed fitment today.
 
at this point, my suspicion is that the cars equipped with 30 lb dog dish flywheels vibrate at a tolerable level
 
Don't have the 140 up and running, but I have a new V6 yoke and Coleman HDC dampened 1pc driveshaft to go into it. Confirmed no sideways angles from crank to diff, need to install the trans to check the vertical angles. Then, you know, little stuff like get it running after 3 years. lol
 
I will be trying soon, I bought the ford t5z brand new. I installed the countergear stabilizer support thing and noticed the countergear had a ton of slop from the factory. More than the manual-specified 2 thou. It seems reputable builders say there should be 0 slop and a wee bit preloaded. Maybe its related? I guess I'll find out

too cold to make real progress :oops:
 
esmth said:
I will be trying soon, I bought the ford t5z brand new. I installed the countergear stabilizer support thing and noticed the countergear had a ton of slop from the factory. More than the manual-specified 2 thou. It seems reputable builders say there should be 0 slop and a wee bit preloaded. Maybe its related? I guess I'll find out

too cold to make real progress :oops:
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Looking forward to hearing how that goes. I honestly think it's a small price to pay if you want to enjoy your car and want a t5. Fwiw I also have wondered if the old slip yoke transmission is just inherently noisier and shakey. I haven't seen a slip yoke trans in a long time (as far as new vehicles/trucks go) and I'm sure there is a reason such as nvh for that. I will also throw this out there in my old Hilux I had a m47 with a guibo on it just like the factory and it was buttery smooth with no shaking or noise when normally driving it. I did the t5 "upgrade" like most here do with just a junkyard unit and the gear noise and vibration was terrible with it. I changed to a dogdish flywheel and that helped but didn't solve the issue. I definitely think a better way to secure the driveshaft yoke in the trans would definitely help and who knows. A few people here could just have hammered out output bushings.
 
Mine was a brand new T5 from Tremec. Howled like crazy on decel when I first put it in.
Later I added a counter shaft reinforcing plate as well as I set a countershaft preload. The big dampened slip yoke that was discussed a couple pages back made the biggest difference.

Mine functions damn near decent now for a 39 YO car.
 
Harlard said:
at this point, my suspicion is that the cars equipped with 30 lb dog dish flywheels vibrate at a tolerable level
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I've said this 20 times in this thread already but I think people are chasing ghosts in here. "why is my hopped up redblock with a 15lb flywheel not as smooth as a BMW inline 6?!?" Well...

cosbySweater said:
Has anyone here tried a newer t5 based trans or are these all "rebuilt" or worn out jy units
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Mine was a new t5z from modern driveline... honestly I think it's fine. The decel rattle through the shifter can get annoying but it's largely drowned out by the buzzing throughout my dashboard. I actually kinda like the way the straighter cut .80 5th gear sings... reminds me of the Hans Stuck M3 GTR nurburgring video.
 
cosbySweater said:
Has anyone here tried a newer t5 based trans or are these all "rebuilt" or worn out jy units
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Mine was rebuilt by culberro. I trust him more than anyone with this stuff :e-shrug:

esmth said:
I will be trying soon, I bought the ford t5z brand new. I installed the countergear stabilizer support thing and noticed the countergear had a ton of slop from the factory. More than the manual-specified 2 thou. It seems reputable builders say there should be 0 slop and a wee bit preloaded. Maybe its related? I guess I'll find out

too cold to make real progress :oops:
Click to expand...

I have heard about this a bunch of times before.

cosbySweater said:
Looking forward to hearing how that goes. I honestly think it's a small price to pay if you want to enjoy your car and want a t5. Fwiw I also have wondered if the old slip yoke transmission is just inherently noisier and shakey. I haven't seen a slip yoke trans in a long time (as far as new vehicles/trucks go) and I'm sure there is a reason such as nvh for that. I will also throw this out there in my old Hilux I had a m47 with a guibo on it just like the factory and it was buttery smooth with no shaking or noise when normally driving it. I did the t5 "upgrade" like most here do with just a junkyard unit and the gear noise and vibration was terrible with it. I changed to a dogdish flywheel and that helped but didn't solve the issue. I definitely think a better way to secure the driveshaft yoke in the trans would definitely help and who knows. A few people here could just have hammered out output bushings.
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The S-197 V6 Mustangs have a fixed output. I'm curious about that.

Also, didn't the Hilux have a B21? Those are much smoother on account of the smaller bores.

smoothdurban said:
Mine was a brand new T5 from Tremec. Howled like crazy on decel when I first put it in.
Later I added a counter shaft reinforcing plate as well as I set a countershaft preload. The big dampened slip yoke that was discussed a couple pages back made the biggest difference.

Mine functions damn near decent now for a 39 YO car.
Click to expand...

Damn near decent is right :rofl:
 
Tyler went with a NEW T5z and still had the rattle actually. Ryan's 242 is silent with a JY box. My first one, various driveline setups, new output bushing, preload on the input and counter shaft, noisy as hell, quieted down a little with the V6 yoke. That one was a JY box that had a fresh rebuild, never even had fluid in it since the rebuild, but it leaked like a SOB even when properly assembled, so it's anyones guess. The one going in hopefully tonight, another JY unit, original Ford gears, billet countershaft retainer, preload on counter and input as well, and the Aerostar yoke (bigger weight than the other V6 yokes, not quite as big as the BIG yoke).

If you look at the earlier Fox's with the 4-cylinder/T5 combo, they had a huge balancer on them as well, but a smaller output shaft so that won't help us out. Kinda goes to the idea that it's T5/4-cylinder that just isn't a happy combo without some weight in there.
 
gsellstr said:
Tyler went with a NEW T5z and still had the rattle actually. Ryan's 242 is silent with a JY box. My first one, various driveline setups, new output bushing, preload on the input and counter shaft, noisy as hell, quieted down a little with the V6 yoke. That one was a JY box that had a fresh rebuild, never even had fluid in it since the rebuild, but it leaked like a SOB even when properly assembled, so it's anyones guess. The one going in hopefully tonight, another JY unit, original Ford gears, billet countershaft retainer, preload on counter and input as well, and the Aerostar yoke (bigger weight than the other V6 yokes, not quite as big as the BIG yoke).

If you look at the earlier Fox's with the 4-cylinder/T5 combo, they had a huge balancer on them as well, but a smaller output shaft so that won't help us out. Kinda goes to the idea that it's T5/4-cylinder that just isn't a happy combo without some weight in there.
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Ryan's 242 has a dogdish flywheel. Chris Miranda's car is also quiet, but it has a Yoshi flywheel.
 
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It's too bad there's not another option that isn't a giant 6-speed the drift kids have driven up in price. I have considered trying an AR5 by getting an LS manual swap kit and using a GM-to-redblock adapter too. Double adapters doesn't seem correct though...but if it works.
 
Broke4speed said:
It's too bad there's not another option that isn't a giant 6-speed the drift kids have driven up in price. I have considered trying an AR5 by getting an LS manual swap kit and using a GM-to-redblock adapter too. Double adapters doesn't seem correct though...but if it works.
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Pretty sure people have stacked them before with no problems, niw did on his t56 iirc.

Look outside of the normal circle for adapters, kl and some other places in Sweden have reasonably priced adapters.
 
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