repair head gaskits

[gixxa]

were does these online apart from gmc, as they have jumped in price on the gmc website since I last got one

[swampy]

As in a thicker than standerd one for use when the head has being skimmed?
If so any dcent spares place should be able to order one .

[blackie_2k5]

motor factors should be able to order one for you, you doing a headgasket change like mate?

[AndySAXO]

yer a head gasket fom the motor factors is like 30 quid mate, they can get them in different sizes,

but there other companys that offer head gasket too like cituning i know they sell them aswell.

andy

[gixxa]

motor factors should be able to order one for you, you doing a headgasket change like mate?
yeah suspect I have a hairline crack in the head gaskest/ de-com plate/head as my coolent needs bleeding every other day. The car runs way to hot and the egt are way to high meaning inlet temps are high.

going back to one thick head gasket as I never liked the of boost drive since going from single hg to de com plate. So with the egt temps hopefully lowered aswell, I should see a again across the range :panic:

[gixxa]

O and ill be fitting my spare head witch I intend on giving a port and polish this week

[blackie_2k5]

so are you looking for an mls head gasket then? pricey, what do you mean by not liking the car since you fitted the decomp? what boost are you running? may just go with single gasket myself? undecided what to do atm as i dont want my engine exploding lol if you find a good priced thick mls let me know mate :)

[blackie_2k5]

are you mean the off boost drive? never read properly, is it really under powered off boost?

[gixxa]

well of boost the compression is way to low (running a 2.1mm de-com plate) so means its slower. Even on boost it feels slower.

GMC are 36.80 for a 1.9mm but seem to remeber paying less than £25 last time from there

[Sophia_Bush]

need a smaller decomp plate i went for a to big one and it was crap id say 1mm and you would be fine and notice a better difference use that and a 1.9mm gasket and you will be fine

[gixxa]

dont think id bother at all with the de-com plate, normall hg are .8mm so a 1.9mm should be fine. Well it was fine at over 1.6 bar before lol

[swampy]

Get a spesso one!
They aint cheap but are reusable and used by wrc teams

[blackie_2k5]

the ones ive gots about 1.6mm i think and a standard headgasket, going to measure and make a better decision, id say 2.1 does sound a bit extreme for a 1.6l engine..... did you run 1.6 bar on stock internals? im tempted to run higher boost but can just see it ending in tears very very soon lol

[gixxa]

well I thought id go down the route of double head gaskets and managed to find mls gaskers for £23.10 so ordered the bits. When they they come they were fiber grrr

Any one know any cons to the double head gasket route

[blackie_2k5]

more possibility of leaks, i wouldnt really reccomend double h/g imo, headgasket is designed to be comprised slightly by two hard surfaces eg the block and the head and this is how it will seal, if your using two the join in the middle is compressing against something thats mean to be hard, but with two gaskets is actually is compressible itself, this will reduce the chances of it sealing totally and when running boost is more likely then others to leak under pressure if you get me? when using the decomp you reduce the risk of this as the decomp is solid so that seals against head with your hylomars or whatever you chose an the other side seals against gasket which seals against block, not very well explained but if you dont get what im saying just let me know and ill try explain better??? :)

[gixxa]

know what your saying dude but would of thought the steel head gaskets would seal against each other better.

In 2 minds as ive done the thick single and the de-com plate routes and a friend has done the 2 headgasket route and the twin gasket seemed to last the longest lol.

so wish I could afford forgies

[blackie_2k5]

if you know its tried and tested and works best id go for it mate, just my thoughts on why it wouldnt be best, im sure mls would be alot better then standard so if its worked well with other it may be the best option?, obv forged is the BEST option but the others all have the good and bad points.. in the end its down to ppls experience on whats lasted longest as youve said....

[gixxa]

well ordered 2 gaskets today and started portong the spare head slighty.

whats the fancy stuff mls gaskets are coated with to help them seal, hoping that just iron out any slight imperfections from the 2 gaskets

[blackie_2k5]

teflon? to make it very smooth? or am i totally thinking of something else??? sounds goos mate, keep me updated on the difrences as im not fully decided on which route im gonna use for lowering the compression yet....you porting the inlet side? was thinking of doing mine, and maybe the exhaust to match my cituning mani.

[gixxa]

well the gasket and head change is done, looks like the head gasket had a reaction to the de-com plate or something along them lines. This made to flakey type bits block water galleries (Teflon coating me thinks).

As always I took some pics with the intention of putting them on here but will probably forget as always

[blackie_2k5]

was it just a standard gasket or an mls? get the pics up mate :) sounds interesting, what was the decomp plate made of? s/s? or copper? if it was copper they tend to oxidise with water and anti-freeze so this could have been the flakey shit in the water galleries?

[gixxa]

was made of alloy and was a mls gasket

[blackie_2k5]

hmm maybe the alloy oxidised?

[blackie_2k5]

hmm maybe the alloy oxidised?
ps

[blackie_2k5]

hmm maybe the alloy oxidised?
ps can you post alink to those mls gaskets