Is there any sources for some good mounts for the 84's? I'm pretty well fed up with the rubber mounts tearing after a few months of driving. I'm getting some wild looks at college when people hear my car clunk every time I shift. Are quality parts too much to ask for these days? I see Rodney has poly trans mounts the are supposed to fit the 84's, but no dogbone or engine mounts for them. I read in another post that he is working on getting some quality rubber mounts, is this still true?
Odd. I have regular rubber mounts with my Indy's SD4 and they're holding up fine. I have poly on the dogbone and THAT's what stops the engine from rocking.
I'll admit my driving is well spirited, but my new motor mounts should have been the last of my worries with a 30 year old car. Where did you buy your poly strut?
I had a Poly dogbone on my 84. I think it came from the Fiero Store. Worked fine, but it transmitted too much vibration for me, since the Duke doesn't run so smooth. I also had one on my V6 Fomula and it worked great. Didn't even know the difference between poly and rubber. V6 ran nice and smooth.
I replaced all the mounts on my 85 duke with rubber ones from Rock auto and not a problem since. Is it possible that you have the wrong dogbone mount on yours, they come in different sizes.
Did you change all of your mounts, as one bad mount can destroy the rest? I have never had a replacement mount go bad. Poly dog bone mount will transfer a lot of vibration and it will stress the other mounts (my opinion).
[This message has been edited by jaskispyder (edited 09-16-2014).]
if you have new type bone then could break trans/engine mounts. New style is a bigger issue w/ 87+ L4 and Auto Trans.
------------------ Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should. (Jurassic Park)
All the mounts were changed at the same time after the trans mount ripped. Then just months later the new one ripped again.
Check for other play in your suspension/cradle? You could have had a bad part, also.
Do you have the single mount or the two mounts for the tranny? If you have the single mount, get the parts from a manual tranny to do the double mount (manual trannies have these). Spreads the load out a little.
Jaskispyder, what other play should I be looking for in the cradle? The bushings? I know that those are original, but how would those affect the mounts? I have the manual trans so I have two transmission mounts. the trans mount towards the front of the car is the one that is ripped.
KurtAKX, will those bushings work on a replacement dogbone? or do I need the original?
The installation procedure, if done wrong, can result in premature failure of the transmission mount. Consult the repair manual for the proper procedure.
On my GT I installed a torque strap to limit rotation under torque. It's just a cable attached to a transmission bolt and cradle. Maybe your driving style requires one.
Jaskispyder, what other play should I be looking for in the cradle? The bushings? I know that those are original, but how would those affect the mounts? I have the manual trans so I have two transmission mounts. the trans mount towards the front of the car is the one that is ripped.
KurtAKX, will those bushings work on a replacement dogbone? or do I need the original?
I would check control arm bushings, and cradle bushings. Get a crowbar in there and see if there is any play. So, you changed the two tranny mounts and the lower engine mount, along with the top strut? I would replace the two tranny mounts again. Also, I don't recommend poly mounts on a duke, as it will only stress the other mounts and the 4cyl will cause a lot of vibration. I tried this and switched back to rubber top strut. Think about this... if the top strut is solid, where will the torque be applied... to the other mounts, which are rubber.
If you have a bad control arm, or cradle mount, it could put excess stress on the engine/tranny mounts, depending on how bad they are. I doubt they are bad enough for that, so I am guessing you just got a bad mount and changing both will fix it. If not, what type of driver are you?
I replaced all the mounts on my 85 duke with rubber ones from Rock auto and not a problem since. Is it possible that you have the wrong dogbone mount on yours, they come in different sizes.
I also got all 3 rubber mounts from rock auto for my manual 84 indy. Anchor brand. Installed them all due to a broken tyranny mount. Still have the original cradle bushings and dog bone rubber. All the suspension was changed to poly at the same time. Car is lowered to right at 2.5 fingers of clearance above the tires.
So far so good. I don't daily drive it however. Probably have a few 1000 on them all.
------------------ Please forgive my typos, I'm typically posting via cell.
1984 Indy Fiero SE Pace Car Replica #770 "SE" Stormtrooper Edition Rescued, resuscitated and reversibly modified! (I'm so not done yet!) Poly all round & Black Drag DR-34s Frt: 225/45 on 18x8 (47 offset w/ 8-9mm spacer) 1.5 coils cut off 1984 WS6 springs Rear: 265/35 on 18x8.5 (45 offset) Coil-overs w/ 10 inch 300lb springs & 7 inch sleeve
I've never done business with Rock Auto before but I might try them out. I'll also check out those bushings while I'm under there. If i remember correctly, my cradle bushings were pretty dry rotted.
That torque strap is a good idea, might have to rig one of those up somehow. If it still doesn't hold to my driving I might just weld the tranny down solid
Just wish I had the time and money to restore the old beast right now, before it rots out from under me.
I've never done business with Rock Auto before but I might try them out. I'll also check out those bushings while I'm under there. If i remember correctly, my cradle bushings were pretty dry rotted.
That torque strap is a good idea, might have to rig one of those up somehow. If it still doesn't hold to my driving I might just weld the tranny down solid
Just wish I had the time and money to restore the old beast right now, before it rots out from under me.
You shouldn't need a torque strap nor should you weld the engine in place. We are talking about the 2.5L (I have owned more than a few and never had a mount break)
Rock Auto is great, they carry the same parts as the local places (but sometimes more selection and better prices), so the mounts will probably still be from Anchor. Just an FYI.
When you change all the mounts do not do the final tightening until all the mounts are installed. If you tighten the transmission mounts while the motor is jacked up to take off the stress when you take the jack out the mounts will have too much stress on them and could break. Leave them loose mounted so they can go into the correct position when you take out the jack.
I've looked at this. I bought some trans mounts from a few different suppliers. All different names. Guess what? All appear to be made by the same China company. Just in different boxes with different brand names on them and sold at different prices. The cheapest ones I bought look exactly the same as the highest price ones I bought.
I'm still looking at my idea and I may get that done one day in the near future. From what I have seen all the aftermarket ones are just low quality short life parts. The problem is the rubber separates from the steel. They all suffer the same fate. Having a poly type dog bone will help a lot.
------------------ Rodney Dickman
Fiero Parts And Acc's Web Page: All new web page!:www.rodneydickman.com Rodney Dickman's Fiero accessories 7604 Treeview Drive Caledonia, WI 53108 Phone/Fax (262) 835-9575
Csjag, Thanks for the tip, The mounts are on there way from RockAuto. Man the shipping costs are crazy!
Rodney, that is exactly what happened to mine. It really disappoints me that this china crap is the only thing available. If you go through with making some high quality mounts i'll definitely be interested! I'm sure my new ones will rip again in the near future.. I guess I am a wild driver or something... I take after my mother
------------------ Red '84, 75,000 miles.. work in progress
One hint: The aftermarket trans mounts use a much thinner steel. Save your old thick HD GM steel brackets if you have OEM GM trans mounts. My kit will require you to use the steel pieces that mount to the cradle. So if the rubber is ripped off save the steel frame piece. Maybe some older replacement trans mounts from years ago used thicker steel?
------------------ Rodney Dickman
Fiero Parts And Acc's Web Page: All new web page!:www.rodneydickman.com Rodney Dickman's Fiero accessories 7604 Treeview Drive Caledonia, WI 53108 Phone/Fax (262) 835-9575
I see Rodney has poly trans mounts the are supposed to fit the 84's, but no dogbone or engine mounts for them. I read in another post that he is working on getting some quality rubber mounts, is this still true?
