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HTP cylinder head? 

 

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 Post subject: HTP cylinder head?
Posted: Wed Jul 18, 2012 3:46 pm 
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Hey guys just starting to bolt together my forged bottom end for my new turbo setup. I bought all the gear unassembled at an extremely good price, it came with a ported head with oversized exhaust valves however it's got 'HTP' in big letters cast to the front of the head. Also on the rear of the head there is quite a deep thread as you can see in the second photo, I have no idea what this is for.

Have you guys heard of or had any experience with these heads?

Image
Image

 

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 Post subject: Re: HTP cylinder head?
Posted: Wed Jul 18, 2012 4:44 pm 
Getting Side Ways
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My guess is that it's an Au head, au's have a temp sensor in the back of the head. It's got something to do with the cylinder shut down mode they have. My understanding is that when the temp gets to high the mixture will richen and help to cool cylinder temps thus preventing the dreaded blown head gasket.

 

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 Post subject: Re: HTP cylinder head?
Posted: Wed Jul 18, 2012 5:42 pm 
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im ot 100% on this but it looks like a aftermarket oem head??..
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 Post subject: Re: HTP cylinder head?
Posted: Wed Jul 18, 2012 6:17 pm 
Getting Side Ways
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Just curios where did you get the kit from?

 

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9/98 AU1 XR6hp-about to retire from the road and be reborn on the race track.
86 ZL mint grandpa spec with premo sound and 150000km
07 TTG 60000km stock as, mods to come.
97 el futura about to be MOCKed

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 Post subject: Re: HTP cylinder head?
Posted: Thu Jul 19, 2012 2:03 pm 
Getting Side Ways
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hey TickfordXR I have the same head :)

Image

it is indeed a AU Head has the previous owner told me that's what I mechanic that fix it at the time said he put on (head gasket leak), hench why I also have a AU Gasket already.

only problem I've had with mine recently was getting the power steering bracket back on, the one at the rear top is for some reason slightly to the left and wont let me screw the bolt in when others are in, have to put that one in first then the rest and its not easy have to force the bracket to move with it in which I don't like etc.

 

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 Post subject: Re: HTP cylinder head?
Posted: Sat Jul 21, 2012 5:28 pm 
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Awesome, Thanks for the help guys. At least I know what I'm dealing with now, Looks like the sensor hole doesn't go all the way through to the water jacket but I'll put a bolt/sensor in it anyway.

ebxr82nv wrote:
Just curios where did you get the kit from?


By kit did you mean just the head or the engine I got as well?

oze-ford wrote:
hey TickfordXR I have the same head :)

it is indeed a AU Head has the previous owner told me that's what I mechanic that fix it at the time said he put on (head gasket leak), hench why I also have a AU Gasket already.

only problem I've had with mine recently was getting the power steering bracket back on, the one at the rear top is for some reason slightly to the left and wont let me screw the bolt in when others are in, have to put that one in first then the rest and its not easy have to force the bracket to move with it in which I don't like etc.
ebxr82nv wrote:
Just curios where did you get the kit from?


Awesome thanks for the tip oze-ford :)

 

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White EL Series II XR8, manual, high flow cats, single 3" exhaust and Quarterhorse = 236rwhp and 14.18@97.5mph

LOWXR - Back to stay - Awaiting forged bottom end

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 Post subject: Re: HTP cylinder head?
Posted: Sat Jul 21, 2012 6:30 pm 
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yeah no worries good to see someone else with it finally.

whats the red stuff on the rear though?

 

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 Post subject: Re: HTP cylinder head?
Posted: Sat Jul 21, 2012 8:50 pm 
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oze-ford wrote:
yeah no worries good to see someone else with it finally.

whats the red stuff on the rear though?


Thats where a plate is glued, so when the head overheats bad it falls off.
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 Post subject: Re: HTP cylinder head?
Posted: Sat Jul 21, 2012 10:04 pm 
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So I don't have to touch or modify the back of the head at all?

 

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White EL Series II XR8, manual, high flow cats, single 3" exhaust and Quarterhorse = 236rwhp and 14.18@97.5mph

LOWXR - Back to stay - Awaiting forged bottom end

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 Post subject: Re: HTP cylinder head?
Posted: Sat Jul 21, 2012 11:06 pm 
Getting Side Ways
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mine seems to have that plate still, is it bad if TickfordXR's is off?

Image

edit - better picture,

Image

 

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 Post subject: Re: HTP cylinder head?
Posted: Thu Jul 26, 2012 1:13 pm 
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By the picture mine still has the plate on it behind the wax looking thing.. I think what they mean by falling off is the orange wax thing, that falls off when the head over heats.

 

_________________

White EL Series II XR8, manual, high flow cats, single 3" exhaust and Quarterhorse = 236rwhp and 14.18@97.5mph

LOWXR - Back to stay - Awaiting forged bottom end

Top
 Profile  
 
 
 Post subject: Re: HTP cylinder head?
Posted: Thu Jul 26, 2012 2:13 pm 
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oh ok I get it now lol

 

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 Post subject: Re: HTP cylinder head?
Posted: Thu Jul 26, 2012 2:13 pm 
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no thats the head welch plug.. the round disc has fallen off your one..

it is a round disc that has waranty void if removed.. i still have one on the side of my head
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 Post subject: Re: HTP cylinder head?
Posted: Thu Jul 26, 2012 5:40 pm 
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this is whats ment to be on thereImage
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 Post subject: Re: HTP cylinder head?
Posted: Thu Jul 26, 2012 7:27 pm 
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Ride: Falcon 1992 EB II XR6

Location: Mandurah
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Hmmm well it's a brand new head, never been used so I cant see it fell off from over heating. Should I just pull the orange s**t off?

 

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White EL Series II XR8, manual, high flow cats, single 3" exhaust and Quarterhorse = 236rwhp and 14.18@97.5mph

LOWXR - Back to stay - Awaiting forged bottom end

Top
 Profile  
 
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