Are they not? Have just pm'ed him...
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Are they not? Have just pm'ed him...
Think mine cost me about £100. I fitted it as I didn't want to be taking the head off again if the standard gasket wasn't up to it. Also my head had been skimmed a fair bit so I needed a thicker gasket.
I used a 3 mls head gasket of gaybay cost about 30 pound, along with deck & skim very light just so i had good mating surface, driven hard and always boosting hard, never had any problems.....
My head is unskimmed. I don't need a thicker gasket either.. After reading about the MLS ones i wouldn't use one, the blocking of water ways and the prone to rusting out is a no no to me. I wanna be able to fit it and then not look in it again for quite a while.
use a z20let gasket then ?
What the diff from a Clet and a Zlet one then?
if the correct amount of anti freeze is used then it shouldnt rust, anyone who has had that problem obviously doesnt look after there car properly in the first placeQuote:
Originally Posted by Benn
iirc people say they am stronger & the bit between the bores are stronger as the the metal rings go all the way round a meet each other, Not sure if normal c20let gaskets do this, but i have used zlet gaskets before now & had no problems what so ever, I know of a few people who run them....
Zlet and cometic are both metal. Zlet one is the one where the waterways don't line up and you have to drill rivets out I think, hence why I didn't bother.
To be honest Benn I would do the arp's and cometic gasket if I took mine out. It may mean another month or so due to cost but if you've got it out you may as well use the chance. Doesn't anyone on mig know someone round you to check the block?
http://www.max-boost.co.uk/max-boost...tm#head_gasket
This shows you how to fit zlet gasket, iirc i never drilled my rivits either...
Looks good ben.
Bores dont look anything of massive consearn, i'd look fooked after 100k miles on me lol
I would give it a light hone, and re ring and bearing the bottom end.
Also, why are you putting the head on ebay? Or is it an on going joke?
sell coscast head for £300, buy vaux head for £50 and £250 up = win!!Quote:
Originally Posted by MattBrown
From what i saw Steve saying, it's cause the gaskets starts to rust where the water is trapped.Quote:
Originally Posted by burgo
Yeah that's what i don't like. I want everything to move freely.Quote:
Originally Posted by Lee H
I've been thinking of ARPs anyway. Gasket wise i was just thinking of using a GM one, which Lee303 and Disco both recommended.Quote:
Originally Posted by Jeff16v
Sadly there doesn't seem to be anyone local, us lot dont normally get in to bores, pistons and such.. But gonna ask more as i'm not sure.
Bit odd. Altho that says about drilling it...Quote:
Originally Posted by sneakycorsa
Cheers dude, i have thought of new rings, i just hate all the running in sh*te you have to do after new rings and that and the worry of it they don't bed it and such.Quote:
Originally Posted by MattBrown
Where better to sell a head worth funk all for mega money.. Remember its Coscast and from a Let, then means its mega rare and worse £££££. I sold a Coscast head from a xe on there and got 300 quid for it.. So that gives me some money back as it looks like i'll be spending more..
Id just keep the coscast head.
In the grand scheme of things £300 is fook all.
Both my XE and LET are coscast, because im a girl, and if the internetz says its cool, I have to have it:):)
Good progress benn.
The bores on the block looked same as when i had the head off my XE couldnt feel any lips on the bores i had a engine specialist i know check them over for me and he said they were fine nothing to worry about.
dont forget in standard form the vaux heads have larger ports so he might get a few ponies toQuote:
Originally Posted by MattBrown
Why keep it tho? It's nothing special.. Why keep 300 sitting there doing nothing.. When that's a new helix clutch.. The head i have as been sleeved to sort any leaking probs (cant think of the real term) and has been semi ported and is all in bits..
Cool, cheers for the info dude.Quote:
Originally Posted by damen
No worries mate it may save you spending a few more pennys that you dont need to thats all. ;)Quote:
Originally Posted by Benn
Yeah deffo.
I've heard the later coscast head is better on the let, no too sure though. Ask Rick as i think i read this on his build thread.
Thanks for half the info John..lol
No problem lol seriously i'd pm rick and just ask him for some advice before you sell it. I do seem to remember him swearing by the late coscast heads.Quote:
Originally Posted by Benn
Little bit of info on the coscast method here: http://www.pngclub.com/forum/showthr...th#post1715991and on the next page.
Simply put though, it's a superior casting process with tighter tolerances etc, so the heads are 'better' but they do not give 90bhp in combination with an ebay ECU chip. They don't crack like the GM heads are known for, which would be the reason GM outsourced their casting to cosworth in the first place I imagine and there shouldn't be any design/dimension differences afaik but this is purely based on what I was told about the process, I've never seen the 2 heads side by side.
theres a thread on vauxsport with the heads side by side for comparison
But bar the wont go pours that's really it.. Which the one i have has been sleeved for any way so.. Been checked and tested by V-turing.
I'll see what Rick says, but sure it will be fine.
Benn my lover, I'm in London friday. I'm happy to run down to you and pick up what bits you want going to an engineer up this way. Maybe PM Browney mate and see who he uses as he's always getting stuff like this done. We can then sort out meeting halfway or something to drop them off again??
The place I used near me done a good job last time but it was the 1st time I used him as the place I normally used changed hands. His prices were a bit dear I thought tho.
Offers there anyway dude.
It's not gonna explode, or drop your power considerably or anything like that, but the cosworth method of casting produces a more flawless, stronger, far more accurate head, it was specifically designed to do just that and remove some flaws from the standard casting process for racing purposes, and then patented and used to cash in from OEM applications (including jet engines lol) That's your advantage, besides the resistance to cracking (GM heads crack at a water way, or oil way I forget which, they don't go porous) whether or not you're gonna notice it is another thing...
I'm not saying they're the be all and end all, personally I'd probably take the £300 too, unless I was doing something that demanded a head with tolerances as tight as possible. Certainly wouldn't pay ebay prices for one lol
They don't seem to make as much on eBay anymore either hence my "rare" dispack Coscast still sitting in my garage!
Just been talking to Pete, he has a guy that can do it. Does all the Lotus stuff, so he can do a honing. Cheers tho dude.Quote:
Originally Posted by The Simps
My heads been sleeved so it wont go on the water way, one reason i like it. But again using the right AF helps that not go anyway..Quote:
Originally Posted by MK999
I'm not doing anything really special, PH2 and that's it so i don't think a Coscast will be needed or anything. The money will re cope for what i'm gonna be spending out.. and just got my insurance renewal too that's another 550 going out...
Ah :( bugger.Quote:
Originally Posted by Lee H
No worries bud.
Ref the block decking and some of the comments. It was Browney who suggested I check the last engine I did which was the XE originally from my nova years ago. That had a fresh rebuild and done barely 4000 miles when it spun a bearing. When I got the head skimmed I took the block to be checked too and it wasn't true so it got a light skim.
Get them to check it while you're there Benn. Do it right, do it once as you say. Whats the price of checking/light skim compared to having to replace a headgasket down the line?
Oh yeah dont worry i will be getting it checked.
No graft done today then?
good work benn,
if you decide to run a cometic gasket you will need to skim block and head, if you just going to run stock let gasket then just give the head a light skim, id probs chuck a set of arp rod bolts in while your at it too
phase 2 aint exactly going to put massive amounts of strain on things so i wouldnt worry about splashing out big money on uprating everything
matt
from what i've heard, a Coscast will hold more heat (dont ask me why, thats a story that goes overhere), and that the best head is a fixed KS.
benn... i have some HUGE news for you ;)
i picked up my new wheels for the mk1 astra yesterday, and the guy turned out the be a distribiter for Image wheels in his spare time.
he had a very nice set, 3 piece, with the bolts in the back (so no bolts are in sight)
afaik the can do that with any wheel the do, just ask for it.
so you get this look (he had these laying around, there porn)
http://www.imagewheels.co.uk/wheels/...dm_classic.jpg
^^^ nice :d
Now they are very nice - any idea on price?Quote:
Originally Posted by mayhem
236 each iirc