How To Fit Gearbox Mount Inserts

Rom

Advanced Member
Messages
1,742
I dont think there is a guide for this, so thought id make one seeing as i was fitting them anyway. I fitted Powerflex inserts, listed for the EP3. These are about the same price as the engine inserts.

Now im going to assume you know some basics, how to jack the car, righty tighty lefty loosey etc :) Also i dont have the standard airbox, so cant comment on that.

Tools Needed

10mm Spanner / Socket (Battery / Intake Hose)
8mm Socket (For my Mugen at least)
17mm Spanner / Socket (Mount Bolts)
Ratchet / Extension
Pliers (Breather Hose / Loom Clip)
17mm Deep Socket (can do without but helped)
Trolley Jack

Time wise, id say about an hour. Took me about 45 mins, whilst taking pics, but i had a impact gun, and about 12 years of being a tech.
You dont actually need to jack the car up, i did, as i will be doing the other mounts this week, and to save me stooping over so much.

So from the top, you need to remove the battery and airbox to access the mount. Then you can see the mount



Now you need to put a jack under the gearbox. Id advise a rubber pad, or block of wood on the jack to be safe. Jack it up to just take the weight a bit.
Now remove the long 17mm bolt through the centre of the mount.



The jack is now taking the weight, the mount should be slack. Though even letting the jack down, the actual box drops very little, the other mounts stop it moving much.
So now you need to take the mount off the chassis leg.

First remove this clip from the battery tray, so the cable can be moved aside. Just pinch the back together with a pair of pliers.



This step is optional, i did it as i thought i might be able to fit the inserts this way. You cant. But it did make getting on the other bolts slightly easier, and also made offering the mount up to check the fit easier.
If you want, remove the 2 17mm nuts, and 1 17mm bolt from the silver mount thats bolted to the gearbox.



Now remove the 3 17mm bolts from the black part of the mount. The lower 2 can probably be reached from underneath, if you remove the arch liner. But the top was simple enough, so unless you cant get enough leverage, this way is fine.



You should now have the mount off the car, and looking like this



Pop these bits off each side of the mount



Now your mount should look like this



Get your new inserts out





Before greasing them (there is a very small sachet of grease supplied), test fit them into the mount







This is how mine looked once both pushed in as far as they would go.



The mounts were fouling each other inside, meaning the gap was quite big either side. Fitting it back in place with the other mount looked tight. It would go, but i thought it may end up making a noise, and just wasnt happy with how they sat



Now i dont know if this is intentional, as i had no instructions. But there is a line / mould line on the mounts.



So i cut along the line, on one insert only, the small and large part both have this line. I cut the small and large parts along the line on 1 insert. But i still wasnt happy with the clearance, so ended up trimming both inserts, the small and large parts.
The fit was now much better.



Still a snug fit on the other mount



Now i greased the inserts, refitted them, and refitted the mounts. Refitting is just a reverse process. Heres how it should look after refitting.




Enjoy
 

Mark_teg

Moderator
Staff member
Messages
4,361
Nice one Chris :)

Does it feel different or haven't you driven it yet?

Good to meet you and chat on Sunday 👍
 

maxvr6

Advanced Member
Messages
1,907
Great guide Rom, thanks for sharing, also interested to know how these change the feel of the car and what the benefits are, do you already have the engine mount inserts fitted too?
 

kazmo

Advanced Member
Messages
822
you sure its a good idea to grease them? i know from experience that some greases will degrade certain rubber very quickly
 

Rom

Advanced Member
Messages
1,742
Mark_teg said:
Nice one Chris :)

Does it feel different or haven't you driven it yet?

Good to meet you and chat on Sunday
I havent driven it yet no. To be honest, ive probably not driven it enough to notice much difference yet. Unless its night and day.

You too mate :)

maxvr6 said:
Great guide Rom, thanks for sharing, also interested to know how these change the feel of the car and what the benefits are, do you already have the engine mount inserts fitted too?
They arent in yet mate, was going to to them tonight, but gfs gone out and ive got the rugrat.
Im not expecting miracles. I just thought 'why not' seeing as i was fitting the engine inserts to run my Buddyclub header. When fitting, you can instantly feel the difference in the amount of flex. How that transfers to driving ive yet to find out.

kazmo said:
you sure its a good idea to grease them? i know from experience that some greases will degrade certain rubber very quickly
Sorry, should have specified. The tiny sachet of grease that is supplied with them. Ill edit the main post. Though in all honesty, its a tiny amount, and most probably came off by the time i got it back in!

Oh and 500th post!
 

Yauie

Active Member
Messages
81
This was a lot of help just did mine at the weekend, just to note when undoing the bolts on the mount that are bolted to the chassis its a tight(ish) squeeze. Its one of them bolts where you flip the spanner numerous times just to get that extra degree of turn on the bolt but once loose can be undone with your hands.

Thanks for the write up :)
 
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