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Dorris
 Post subject: Head gasket
PostPosted: Sat Mar 31, 2007 11:23 am 
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Location: The Vale, South Wales
Car Model: ST185 CS/RC
Well, guys the saga continues. After burning the midnight oil a few nights to sort the exhaust and manifold the car was running better then it ever has since i've had it (big smiles). Anyway last week I took it to the lake district and everything was going great until we came up with the outrageous idea of driving the Hardknock Pass and yes you've probably guessed the head gasket didn't like it.
What i'm wanting to know is there anything to look out for when pulling the head off or putting it on, etc. or is it fairly straight forward. Also I'm after some advice on the head gasket its self, what's the advantages or disadvantages on the steel gaskets from Fennsport and are they worth the cost and also what about the thickness, I think i'll be looking at reliability rather then performance. Cheers guys, Dorris

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Doomanic
 Post subject:
PostPosted: Sat Mar 31, 2007 7:10 pm 
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Go for a MHG from an ST205.
Goes straight on, no messing about and costs under £50 from Mr T
I've done 3 now and all the cars are still going strong, two at 12psi and one stock.

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Kris
 Post subject:
PostPosted: Sat Mar 31, 2007 8:16 pm 
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Location: Sunny Fareham, UK
Car Model: ST205
Quote:
Go for a MHG from an ST205

Wise words :)

I'd also fit ARP head studs for added advantage.

I have a brand new 205 MHG for sale for £25 delivered :)

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Kris
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Dorris
 Post subject:
PostPosted: Sat Mar 31, 2007 8:17 pm 
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Car Model: ST185 CS/RC
Thanks for the reply but now i'm wondering what the advantages are in running a 205 gasket on a 185 or is just as simple as the fact that the 185 didn't run a MHG. For some reason I expected a head gasket from Toyota to cost more then £50. Dorris

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Doomanic
 Post subject:
PostPosted: Sat Mar 31, 2007 8:21 pm 
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Dorris wrote:
or is just as simple as the fact that the 185 didn't run a MHG


Got it in one.Image
Buy the one Kris has for sale before I do. :P

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1991 Jap ST185A
ST205 Head Gasket.
Some random RV & no-name BOV
Blitz Nur-spec SS backbox
Apexi Air Filter

ST205 Front Calipers - Yes, really!
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Dorris
 Post subject:
PostPosted: Sat Mar 31, 2007 8:24 pm 
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Whos Kris?

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Dorris
 Post subject:
PostPosted: Sat Mar 31, 2007 8:28 pm 
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These MHGs I take it they are of the laminated aluminium type or are they a lot more solid one piece?

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Dorris
 Post subject:
PostPosted: Sat Mar 31, 2007 8:33 pm 
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Please ignor the "Whos Kris" reply, I was being dumn I read the replies in reverse order........Doh!

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Kris
 Post subject:
PostPosted: Sat Mar 31, 2007 10:29 pm 
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Car Model: ST205
Quote:
These MHGs I take it they are of the laminated aluminium type or are they a lot more solid one piece?

They are multilayered, 4 layers I think?

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Candyman
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PostPosted: Sun Apr 01, 2007 1:11 pm 
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From what I have read in the past I thought the waterways were a bit different on the 185 head. Meaning that the 205 HG is fine if you have a 205 head fitted but there are better options if you are still on a 185 head.

But I could be wrong (again) cos I tend not to pay much attention to 185 related tech threads...

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Doomanic
 Post subject:
PostPosted: Sun Apr 01, 2007 2:18 pm 
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Candyman wrote:
From what I have read in the past I thought the waterways were a bit different on the 185 head. Meaning that the 205 HG is fine if you have a 205 head fitted but there are better options if you are still on a 185 head.

But I could be wrong (again) cos I tend not to pay much attention to 185 related tech threads...


I thought this when I fitted the first 205 MHG to a 185 and duplicted the waterway holes on the gasket. All the holes are in the right places, but some are a different size.
On the second and third engines I didn't bother and there has been no noticable difference in engine temp.

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1991 Jap ST185A
ST205 Head Gasket.
Some random RV & no-name BOV
Blitz Nur-spec SS backbox
Apexi Air Filter

ST205 Front Calipers - Yes, really!
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Candyman
 Post subject:
PostPosted: Sun Apr 01, 2007 2:21 pm 
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Cool. I guess it's not an issue then. Noted for future babbling :)

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JDM ST202 (Finally sold :))
1982 Pontiac Trans Am 5.7L V8 (See my website)
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Homer
 Post subject:
PostPosted: Mon Apr 02, 2007 11:47 am 
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Car Model: ST185
Just a question or two if i may? What is the thickness of a 205 head gasket ? And is that any different to the 185 stock hg ? Thanks all.

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peterp1per
 Post subject:
PostPosted: Mon Apr 02, 2007 6:30 pm 
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apprently the stock 205 gasket is 1.2mm whereas the 185 paper gasket is 1.0mm

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Dorris
 Post subject:
PostPosted: Mon Apr 02, 2007 6:37 pm 
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I can give you a definite answer this week as I will have 2 brand new head gaskets through, one card, one metal. I'll mic them up and let you know. I'd assume the metal gasket would be thicker as it crushes down the laminate layers more then a card one would when you torque the head down. Dorris

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