4.4 rv8 build thread (Doc evil need not post)

[fett]

does anyone use anything apart from rtv silicone? im not a fan of hylomar as long term oil seems to disolve it. in addtion I am looking for something a bit harder and more adhesive for the inlet manifold to head joints, particularly around the waterways which are known to be a problem to seal on these engines. have you noticed silicone is a bit to easy to get off? I have

 

[thought it was mine!]

does anyone use anything apart from rtv silicone? im not a fan of hylomar as long term oil seems to disolve it. in addtion I am looking for something a bit harder and more adhesive for the inlet manifold to head joints, particularly around the waterways which are known to be a problem to seal on these engines. have you noticed silicone is a bit to easy to get off? I have

many and oil pick up blocked by silcone

 

[jamesmartin]

does anyone use anything apart from rtv silicone? im not a fan of hylomar as long term oil seems to disolve it. in addtion I am looking for something a bit harder and more adhesive for the inlet manifold to head joints, particularly around the waterways which are known to be a problem to seal on these engines. have you noticed silicone is a bit to easy to get off? I have

depends whih you use
you can get better types of silicone,wurth did some specialist ones

 

[fett]

what do you use in that location james?

 

[fett]

and if you cant use silicone what can you use? lol

 

[jamesmartin]

those locations plus ,borgwarner t/box as case is in two halfs ,oil resistant heat proof etc a lot more so than std silicone ,not cheap£20-30 but good for high risk areas ,hylomar is really for paper gaskets , though old fashioned setting stuff isnt bad

 

[fett]

give me a link to the good stuff james

 

[fett]

well at least give me name?

 

[fett]

just ordered some oil filters, they are longer than the current ones on the 72. so long as the thread is right and the O ring seats properly am I right in thinking the filter will work?

 

[discomark10]

you might struggle getting it in past the front cross member if its too long

 

[fett]

its 150mm instead of 105mm , I ad a look and it looks like it will miss, so it probably wont

 

[fett]

Had a look at the loctites and it seems you cant get much sheer strength in combination with gap filling and high temp. see which one you would use

will 150c be enough max temp?


Loctite 5980 - Loctite - Henkel

Loctite 5920 - Loctite - Henkel

Loctite 5900 - Loctite - Henkel

Loctite 574 Gasketing - Henkel

Loctite 518 Gasketing - Henkel

 

[Thor1950]

Had a look at the loctites and it seems you cant get much sheer strength in combination with gap filling and high temp. see which one you would use

will 150c be enough max temp?


Loctite 5980 - Loctite - Henkel

Loctite 5920 - Loctite - Henkel

Loctite 5900 - Loctite - Henkel

Loctite 574 Gasketing - Henkel

Loctite 518 Gasketing - Henkel

what are you wanting to seal?

 

[jamesmartin]

for what ? last one seems good to me but so do they all

 

[fett]

thor the most important will be inlet to block ie valley which is known leak point on 4.4 also though rear cap and front cover and the bodched front crank seal I have. less important is rockers and sump and stat as they can be messed with more easily when engine is in the car,

 

[fett]

james is 150c high enough temp rating for valley etc?

 

[fett]

I also wonder about the max gap of 0.3m being enough with the known bad fit of the inlet to heads, the 1mm looked good but low sheer strength

 

[Thor1950]

thor the most important will be inlet to block ie valley which is known leak point on 4.4 also though rear cap and front cover and the bodched front crank seal I have. less important is rockers and sump and stat as they can be messed with more easily when engine is in the car,

put a coating on each side of valley tin.

Really I would not use that as a replacement for the gaskets, use with them

 

[jamesmartin]

I also wonder about the max gap of 0.3m being enough with the known bad fit of the inlet to heads, the 1mm looked good but low sheer strength

you dont want too much thickness its gasket thats sealing and thats just filling the imperfections,silicone works so dont see why that shouldnt

 

[Mr Noisy]

Ok I have 5980 in the workshop, it's **** hot gear and very handy in that pressure tube thing, it is a gasket maker so i use this when i have no gasket available, frankly its better than gasket cos gaskets leak, use that for all sorts of jobs it's awesome, very sticky, very sealy, sets semi hard its great stuff also use it on exhaust joints instead of paste it is superb, wipes the floor with old fashioned paste

5920 I keep in the car for field repairs but have never used it to date

5900, 574, 518 not used

Halfords | Loctite 5922 Flange Sealant 60ml

This is the one I use for gasket improvement, it's non hardening, similar to hermatite blue basically

So between 5922 and 5980 it's everything I need