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Location:
Baulko Hillo
Registered:
April 2004
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Metal HG for 20V turbo application
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Tue, 28 September 2004 23:42
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Hey people,
Just after opinions on what I should do regarding the topic. I have just bought an 8mm TRD metal HG which I was going to use when I put in bigger cams and did a bit of headwork, but now it looks like I have a turbo kit lined up instead.
I'm thinking the 8mm would still be worthwhile with the turbo, but I reckon a thicker metal gasket could be the go to reduce compression and hopefully help with longevity as well. I'm unsure whether the stock 20V HG is 8mm as well.
Any ideas?
Jeremy.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Metal HG for 20V turbo application
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Wed, 29 September 2004 00:08
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Using a head gasket to lower the compression isn't a good idea. Make sure your tuning is spot on and you use an IC and you shouldn't have any problem.
Example: There is a turbocharged S2000 over here in Perth with factory internals, thats like 11:1+ compression ratio 
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Location:
Baulko Hillo
Registered:
April 2004
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Re: Metal HG for 20V turbo application
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Wed, 29 September 2004 00:14
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Thanks mate. The kit comes with a fairly sizeable Garrett intercooler, so that should be ok.
So running the 8mm TRD gasket should be fine, yeah?
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Metal HG for 20V turbo application
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Wed, 29 September 2004 00:27
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I don't know what the 20v comes with factory, if its close to the same size I couldn't see why there would be any problems.
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Location:
Sydney (Campbelltown...!)
Registered:
December 2003
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Re: Metal HG for 20V turbo application
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Wed, 29 September 2004 07:38
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it be 0.8mm thick
pretty much the same as a standard one but metal and maybe stronger?
how much did u pay for it and where did u get it i need one as i need to pull the head off to do my valve stem seals
i have sourced some gze low comp pistons in a complete bottom end for mine as was thinking about doing turbo coversion too but might be to much effort only time will see...
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Location:
Baulko Hillo
Registered:
April 2004
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Re: Metal HG for 20V turbo application
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Wed, 29 September 2004 08:01
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Yeah, sorry, I meant to type 0.8mm....
I'll find out if the place I got it has anymore and get back to you man. I paid a lot less than what they usually retail for.
As for the block/pistons, I'm not bothering with mine.... Only gonna be running around 7psi anyways.
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: Metal HG for 20V turbo application
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Wed, 29 September 2004 13:50
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I would assume the standard HG would be at least 1-1.2mm, to make the aftermarket 0.8 of some benefit. And then ideally with a metal HG you'd wanna machine both the head & block, but that would most likely leave you with a relatively sky high C/R.
A thicker HG is not always the best solution, but is the easiest, and the only time they're really bad is if you use 2 head gaskets together or something as dodgy as a spacer plate. HKS head gaskets come in .2mm steps from .8mm to 2.0mm, and you should be able to pick one up for around $160.
I used a 1.6mm thick one, with 8.9:1 GZE pistons but with a machined block & head (16V), & ended up with 9:1 C/R, according to my hopefully accurate calculations.
You really would be better with something a tad thicker rather than thinner.
See you on sunday slut, I'm looking forward to seeing your car. 
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Location:
Baulko Hillo
Registered:
April 2004
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Re: Metal HG for 20V turbo application
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Thu, 30 September 2004 01:53
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Thanks Joel,
We'll talk more in-depth about this on Sunday no doubt!
Looking forward to catching up with you and getting the latest on your beast!
Dunno if I will have my car there on Sunday. If Jabbit takes his truck (depending on rain), I may drive his new Sprinter out.
Cheers,
Jeremy.
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Location:
Sydney (Campbelltown...!)
Registered:
December 2003
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Re: Metal HG for 20V turbo application
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Thu, 30 September 2004 08:28
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do you know retail on the metal head gasket?
im going to need either one of these or a standard one soon as well as some other gaskets for the head
do u know anywhere other then penrith toyota that sells stuff like this for the 20v?
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Location:
Baulko Hillo
Registered:
April 2004
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Re: Metal HG for 20V turbo application
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Thu, 30 September 2004 08:32
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TRD gaskets like mine apparently retail for about $240... Hang in there as I might be able to sell you mine for much less than that.
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Location:
Sydney (Campbelltown...!)
Registered:
December 2003
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Re: Metal HG for 20V turbo application
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Thu, 30 September 2004 13:36
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kool just pm me and let me know when ur ready
id swap some stuff for it if ur interested
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Location:
nelson, new zealand
Registered:
October 2004
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Re: Metal HG for 20V turbo application
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Fri, 01 October 2004 02:24
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how much??? yikes ill sell you 2 for $240 aus...
the stock thickness of a ae101 silver top head gasket is 1.25mm.
i have had ppl doubling up to get a thicker metal gasket, seems to work ok as the TRD one is made of thin sheets of metal so doubling is just like adding more sheets.
they also come in 0.5mm sizes
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Location:
Sydney (Campbelltown...!)
Registered:
December 2003
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Re: Metal HG for 20V turbo application
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Fri, 01 October 2004 07:39
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would u sell one?
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Location:
Wollongong, NSW
Registered:
April 2004
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Re: Metal HG for 20V turbo application
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Sat, 02 October 2004 10:33
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AE101 20V 0.8mm TRD Head gaskets were $157 last time I called Castle Hill Toyota. And they had them on the shelf...
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Location:
Baulko Hillo
Registered:
April 2004
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Re: Metal HG for 20V turbo application
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Sat, 02 October 2004 10:37
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| psychofox wrote on Sat, 02 October 2004 20:33 |
AE101 20V 0.8mm TRD Head gaskets were $157 last time I called Castle Hill Toyota. And they had them on the shelf...
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Really? Well I've cetainly been mis-informed! Glad I didn't pay more than that then.
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