Sikaflex engine mounts.

[duff_boy]

Hey guys, just a few quick questions with using sikaflex to 'patch up' engine mounts.

The rear engine mount in my mr2 3sgte is a little worn out. Anyhow ive been told you can "fix" them with sikaflex. For starters, which sikaflex is the one to use? Theres different types.
Also, as far as fixing them goes, do i just fill in the gaps between the rubber and the metal ring which runs around the outside. Or do i completely remove any rubber(cut it out with a knife or similar), position the steel tube in the middle, and completely fill around it.

Kind of hard to explain, but if anyones done it before have you got a guide or a few pics.

Cheers, any help is appreciated

[leso]

not really a help with your question...but Queensland Rollers & Bearings reco engine mounts.

cheers leso

ps have seen their work ...looks good they did a great job reconditioning my slippers for my 18rg

[Talasas]

I did it before, as long as the rubber is very clean the Sikaflex will bond to it well. I went to my local windscreen repairer and asked to buy a tube of what they use, it cost about $10 and they'll know which one works best. Just tell them you wanna use it for an engine mount so it needs to be strong and for the love of zombie jesus don't let them try to sell you Mastic which is a caulking compound they also use on windscreens.

[clubagreenie]

I'd go through the website. I've never really sat down to work out the differences, they all say they seal, they all say the adhere. Just to different degrees I suppose. Best advice is to not get it on your fingers or be p[repared to claim abo benefit for a few weeks

[Ghetto-Spec .:bayka:.]

Gday mate.
Well i can proudly speak from experience. I "repaired" my critical front engine mount on my FWD seca. People laughed at me when i asked if it was possible, but ive been using the mount for over 1yr...ppl are all too keen to pass judgement before they have tried something themselves

- - details - -
Sikaflex-227 (black) is preferable so it doesn't stand out too much. You can get it in white. Its about $25 tube and u need a caulking gun.

I kept what i could of the mount because the mount rubber is much harder than the sikaflex will ever be. I used a piece of plastic to hold the wet sikaflex at each side of the mount and simply filled in the gaps. Once it had set, i simply cut off the plastic pieces that were holding the sikaflex in the mount.

Note that you will need to leave it for at least 48hrs for it to set well enough to put back in the car.

- - results - -
The mount has a bit more give than it should but it operates fine.

[horse]

use liberal amounts of wax and grease remover prior to applying the sikaflex. when pumping the sikaflex, make sure you are wearing gloves. also ensure you dont create any air bubbles. use your finger if need be to push the sikaflex down.

[J-M kujala]

1 component clue take a lot time to dry if glue have lot of *deep* mine take allmost 2 week
(ta22 mounts)

2 component windscreen glue is pretty good, and dry fast , in windscreen shop they can fill your mounting with cheaper than one 1 component sikaflex tube cost and its dry fast ...under 24 hour (depends at glue)

this really works in many cars and lot of cheaper than performance mountings in speedshop !!




juha-matti

[IN 05 NT]

sikaflex $20,
new engine mount $50
time wasted repairing old mount $88hr

knowing you did the job right the first time, PRICELESS!

just replace the mount, so much easier, cheaoer in the long run,

i bought a new mount for the celica a few months back, it was only $60 and was a special order....

blake

[JetspeedCamry]

sikaflex $20,
new engine mount $50
time wasted repairing old mount $88hr

knowing you did the job right the first time, PRICELESS!

just replace the mount, so much easier, cheaoer in the long run,

i bought a new mount for the celica a few months back, it was only $60 and was a special order....

blake

Indeed in some cases, but an example of where sikaflex could come in handy is my gearbox mount for my VZ. $260 ex Japan! So that $88hr is worth it!

[J-M kujala]

but when want them a little bit stiffer it will work , and maybe all mountings cant buy anymore repairing the stock , because its broken and stock wil work , then buy a new one if possible , and its not cost like hell

[ivan]

Copied for another source:

OK, here is the homework

Hardness scale

Rubber band 25-35
Light car tyre 60-65
Tap washer 85-90
Heavy track tyre 95-100

Standard engine rubber mount 40-50
Noltec polyethylene bushes 80-85

From what I can see on the web, material with 70 to 80 hardness will be a good place to start.

As to the material choice.

Sikaflex does not seem to be the right material for the purpose.
It is primarily a sealant, and it’s hardness is 23-27, which is very low.
http://www.sika.com.au/home/cmc/cmc/...lexPRO_tds.pdf

Devcon’s Flexane 94 seems to be a good product, however with claimed hardness 97, I would not use it.
The harder the better is not the case – cracks in metal may be the result.
The softer version, Flexane 80, has hardness 87, which is still a bit high.
There is an add-on flexibiliser (what a word ) which lets you to lower the hardness.
http://www.devcon.com/techinfo/153.pdf
The good thing is you can do different hardness bushes from the same set of chemicals, so no waste.

Erapol CC80A or CCM75A is another shortlisted material
http://www.erapol.com.au/about_pu/el...roperties.html


Some more ideas about the technology:
http://martybugs.net/Pintara/mount.cgi

Ivan

[thepeter]

I used Sikaflex 267 - albeit more expensive, (at about $40-50 per tube) it's harder, and lasts a hell of a lot longer than 227. a bit more resistant to movement also.

that said, 227 does fine in my experience as well, just... be liberal in it's application.

[Jt_70R]

does anyone know of any aftermarket suppliers of 'performance' engine mounts? ie. better than stock toyota ones?
i have been contemplating for a while replacing the front and rear mounts on my 162 with some kind of urethane or similar, but am wary about making a mount too rigid resulting in massive vibrations through the car.
my FWD puts out 100kw at teh wheels, which seems to give considerable engine 'rock' even with brand new toyota mounts. surely there must be some high powered FWDs (or MR2s) getting around with more 'hardcore' mounts?

[The Last Streetfighter]

not really a help with your question...but Queensland Rollers & Bearings reco engine mounts.
cheers leso
ps have seen their work ...looks good they did a great job reconditioning my slippers for my 18rg

QRL = Queensland Rollers and Liners. If the old fart is still working there, check out his Bush Rangie (mongrel 4wd) while you are there.

[Joshstix]

does anyone know of any aftermarket suppliers of 'performance' engine mounts? ie. better than stock toyota ones?
i have been contemplating for a while replacing the front and rear mounts on my 162 with some kind of urethane or similar, but am wary about making a mount too rigid resulting in massive vibrations through the car.
my FWD puts out 100kw at teh wheels, which seems to give considerable engine 'rock' even with brand new toyota mounts. surely there must be some high powered FWDs (or MR2s) getting around with more 'hardcore' mounts?

There are a few options available for the MR2 in the states, take a look at ww.twosrus.com. I fon't know if they'll fit a ST162 though.