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XR6T piston dish? or chamber cc..has been found 

 

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 Post subject: XR6T piston dish? or chamber cc..has been found
Posted: Tue Feb 07, 2006 9:01 pm 
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does any one know what size dish the stock XR6T psitons have?

or the dish size for any of the off the shelf replacments?
or the cc of the chamber will do.


I had enough of calling the makers of these things none of them can tell me a thing.


Hell ACL/Mahle pistons tech guy didn't even know they made forged XR6T pitsons

 

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Last edited by tickford_6 on Wed Feb 08, 2006 9:17 pm, edited 1 time in total.

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Posted: Wed Feb 08, 2006 12:26 pm 
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Up your way talk to http://www.qri.biz/content.asp?pg=suppliers&sid=1
They supplied pistons for me...NOT off the shelf though...

 

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Posted: Wed Feb 08, 2006 7:29 pm 
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yeah i tried them already. they couldn't help. and wanted to much for custom ones..


It's all good now anyway. brad from atomic finaly answered the phone and was a big help

 

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Posted: Wed Feb 08, 2006 7:56 pm 
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if you did finally get an answer, post it up so next time someone can search for it

 

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Posted: Wed Feb 08, 2006 8:49 pm 
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the atomic ones (CP) have a dish of 12cc

used in an EF in ten thou over would give
a compression 8.97:1
and 20 thou would give 9:1

I'm having some made with flat tops and will give a compression of 10.35:1

with further machining of the head we are aiming for 11:1 for my engine
I will need to remove 5cc from the chambers in the head to get this.

this is all asumming zero deck hieght and a 40 thou compressed head gasket.

using an AU head gasket would give close to .5 extra compresion

 

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Posted: Thu Feb 09, 2006 12:12 am 
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im pretty sure i calculated, that a 20' o/s eb engine, with 64cc chambers (std), and using acl race pistons, which have a 5cc dish, and using the au gasket which is around 22', it was around 10.3:1... acl quote those pistons with a std gasket to be 9.8:1.

if you were to use flat-tops, i doubt you'd need to touch the chambers to get 11:1

off the top of my head, i rekn to remove 5cc from the chambers, u'd need to machine it 26'

Can i ask why you want 11:1 comp, whats the plans for your engine??

 

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Posted: Thu Feb 09, 2006 12:16 am 
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http://www.rosspistons.com/calculator.php

 

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Posted: Thu Feb 09, 2006 8:21 pm 
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ebs_4l wrote:
im pretty sure i calculated, that a 20' o/s eb engine, with 64cc chambers (std), and using acl race pistons, which have a 5cc dish, and using the au gasket which is around 22', it was around 10.3:1... acl quote those pistons with a std gasket to be 9.8:1.

if you were to use flat-tops, i doubt you'd need to touch the chambers to get 11:1

off the top of my head, i rekn to remove 5cc from the chambers, u'd need to machine it 26'

Can i ask why you want 11:1 comp, whats the plans for your engine??



the ACL website quotes 9.6:1 for the 5cc piston, so for that it would have been a 65cc chamber and thats what i worked off.

it's a little rough and my chambers will not be left stock anyway.

and for the 11:1 comp question. it's more a reason need then want

i'm not giving full details of the engine, other then 11:1 compression H-beam rods and forged pistons, N/A do the math

 

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Posted: Mon Feb 13, 2006 1:00 am 
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Methonol / Ethonal ???

 

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Posted: Mon Feb 13, 2006 1:03 am 
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Maybe chasing the unobtainable >200RWKW N/A! ;)

 

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Posted: Mon Feb 13, 2006 9:26 pm 
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EBXR8380 wrote:
Methonol / Ethonal ???



98 pump fuel on the street, might consider c16 at the strip


waggin unobtainable now, but it's only a matter of time,

 

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Posted: Mon Feb 13, 2006 10:32 pm 
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The way petrol is going the price of alcahol is not too bad ...You recoup some bad fuel milage through higher comp engine...Only issue is you need 3 times fuel delivery and change all rubber O rings etc...

 

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Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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Posted: Mon Feb 13, 2006 10:49 pm 
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yeah feuls a b**ch. when this engine goes in i'm retiring the xr from daily duties. being a mechanic you cant drive a car every day and keep it clean.
so i'm buying the dead guys 84 mazda 323 from across the road.

 

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Posted: Sat Feb 18, 2006 4:50 pm 
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U want them for a BA?
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Posted: Sun Feb 19, 2006 11:42 am 
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ba_xr6turbo wrote:
U want them for a BA?


no i want them for an EF.

i finnaly sold my hilux now too, so i'll be placing the order for the pistons some time in the week. then i think it's going to be a few weeks wait ti'll they get here

 

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