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Silicon/rtv/permatex does it have a place in an engine?
RENNWAGEN - December 20th, 2012 at 08:58 PM

I'm about to start putting my 2 litre back together and there seems to be a lot of disagreement on this subject. To some people it is evil and to others a necessary part of any engine rebuild. I'd like to hear everybody's thoughts and experience.

matberry - December 21st, 2012 at 07:50 AM

I use an RTV sealant on the barrel base, no where else. The main problem with the product is it spews into the inside of the join and little bits can get into the oil system.

vwo60 - December 21st, 2012 at 10:31 AM

High temp RTV for exhaust gaskets, i also use loctite 518 to join the case halves and loctite grey under the barrels.

RENNWAGEN - December 25th, 2012 at 02:16 PM

What about around pushrod tubes and under the head stud washers. I have a couple of engines on my bench that both have silicon in these places, one very carefully and neatly the other not so. Is it a good idea to use silicon in these spot or should it be unnessecary.

vwo60 - December 25th, 2012 at 04:57 PM

You do not need any silicon on the push rod tubes, i use the loctite grey under the four head stud flat washers and make sure that there is no excess, always clean it off so it is under the washer only.

psimitar - December 25th, 2012 at 05:38 PM

I use permatex on the case halves and pushrod seals. The seals is just a precaution as you can never tell how good the seals are gonna be these days.

vwo60 - December 26th, 2012 at 10:23 AM

Buy the german one's and put them on dry, if they are silicon the sealant will not stick to them anyway, remember they are under compression.

psimitar - December 26th, 2012 at 12:42 PM

Quote:
Originally posted by vwo60
Buy the german one's and put them on dry, if they are silicon the sealant will not stick to them anyway, remember they are under compression.


The ones I got from Mick's sure weren't German hence using a bit of sealant to help :)

next time when I have more time to source parts I'll make sure they're German :)

vwo60 - December 26th, 2012 at 03:29 PM

I buy complete german gasket sets from pierside parts for $14.00.

matberry - December 26th, 2012 at 10:35 PM

Quote:
Originally posted by psimitar

The ones I got from Mick's sure weren't German hence using a bit of sealant to help :)




Wow, thats a surprise.....NOT

psimitar - December 26th, 2012 at 11:01 PM

Quote:
Originally posted by vwo60
I buy complete german gasket sets from pierside parts for $14.00.


Sweet :) That's going in the memory banks :) Ta

psimitar - December 26th, 2012 at 11:04 PM

Quote:
Originally posted by matberry
Quote:
Originally posted by psimitar

The ones I got from Mick's sure weren't German hence using a bit of sealant to help :)




Wow, thats a surprise.....NOT


Hmm, I'm noting a spot of sarcasm there :)

I've given up finding an Oz vendor for German quality gear at reasonable prices tho mainly the quality thing so make use of the euro exchange rate at present :)

matberry - December 27th, 2012 at 08:05 AM

I stock them, how many do you want?

There are also more than 1 German Elring kit available, the cheap $14 version from O/S won't have everything in it.

vwo60 - December 27th, 2012 at 09:55 AM

everything except the the rear main seal, the german one's are $4.50 extra.

psimitar - December 28th, 2012 at 12:21 AM

Quote:
Originally posted by matberry
I stock them, how many do you want?

There are also more than 1 German Elring kit available, the cheap $14 version from O/S won't have everything in it.


Thanks Matt. I'm good at the mo but good to know these things for future reference. How many parts of german quality do you stock?

matberry - December 28th, 2012 at 07:51 AM

Quote:
Originally posted by psimitar
Thanks Matt. I'm good at the mo but good to know these things for future reference. How many parts of german quality do you stock?

I presently have around $20 000 worth of stock, too much to list but ranging from pretty well all air-cooled service parts to a big range of Weber jets to that hard to find type 4 rubber dipstick boot or Berg performance gear....... Obviously not everything German but best quality available.

psimitar - December 28th, 2012 at 04:28 PM

Quote:
Originally posted by matberry
Quote:
Originally posted by psimitar
Thanks Matt. I'm good at the mo but good to know these things for future reference. How many parts of german quality do you stock?

I presently have around $20 000 worth of stock, too much to list but ranging from pretty well all air-cooled service parts to a big range of Weber jets to that hard to find type 4 rubber dipstick boot or Berg performance gear....... Obviously not everything German but best quality available.


Cool. I'll PM ya when I'm in need then :)

fish26 - January 1st, 2013 at 08:54 PM

my way........
hone the pushrod tube seal mating surface, good quality seals and on dry, I like the aluminium sprung tubes the likes of JayCee, Scat.......ones with the double o-ring
Permatex Aviation for a lot of machined surfaces

If you are going to use RTV please use sparingly