Hey guys
 
I have a frustrating issue, I have a supra conversion from Dellow and have this annoying vibration on decelleration, I have checked the diff angles, the custom Prop is all good, the engine/gearbox mounts are all good and the gearbox has been checked and new bearings throughout. I still cant find what the issue is. I also had this issue with my celica conversion before the supra conversion was put in. I have read that Dellow bellhousings have been known to out of alignment. Can anyone help me find a solution to this frustrating problem?

I was thinking the out of alignment issue too. From memory there was a thread detailing the issue on here or rsm ?

Shaun

This may help.
 
http://rsmotorsport.com.au/forums/viewtopic.php?f=21&t=2814
 
Cheers
 
Matt

Look here,

http://rsmotorsport.com.a...wtopic.php?f=21&t=2814

And here,

http://rs2000.mine.nu/for...VE=true&TOPIC_ID=19480

Shaun

Beat you ;-)
 
Matt

Thanks for the links guys, 
 
I have read these threads but unfortunately the Supra bellhousing doesn't have the circle in it to measure the run out, it has an oval opening which I can not see how it is possible to measure the misalignment. 

Does the conversion use a spiggot bearing or a bush?  I recall a V6 I had with a 5 speed did a similar thing, when I split the box from the motor the guy had used a turned bush instead of a roller bearing in the end of the crank.  I cannot say though that this was the cause of the problem as I sold the parts off

The escort 2lt to steel case conversion using a dellow conversion uses a bush and I have used the bush for over 80,000km without any issues so it should not be a problem unless the bush is worn and now oversize... they are bronze and should be soaked in light oil overnight to 'preoil' them. Th e first one I utilised I did not preoil and it wore out quickly, but did not cause any vibration issues...

The only vibrational issues I have ever had in the escort related to uni joints in the tailshaft that were quite worn at one stage....

gtv6capri

Does the conversion use a spiggot bearing or a bush?  I recall a V6 I had with a 5 speed did a similar thing, when I split the box from the motor the guy had used a turned bush instead of a roller bearing in the end of the crank.  I cannot say though that this was the cause of the problem as I sold the parts off

i have the W58 conversion in my escort and had the same sort of vibration issues that you are talking about, cant remember if it was only on deceleration, but i know how annoying it is.
turned out on mine it was stuffed tailshaft uni joints, and in escorts the uni's are not rebuildable, so i upgraded to bigger rebuildable units and problem solved. no more vibrations.
 
gazz

Thanks for the advice. The spigot is a turned bronze bush as part of the Dellow kit. I had a custom Propshaft made and they replaced the Unis with heavy duty ones. How can I diagnose stuffed unis?