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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
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 Last edited by tickford_6 on Wed Feb 08, 2006 9:17 pm, edited 1 time in total. |
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| EBXR8380 |
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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...
_________________ As in ZOOM 126 edition |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
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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| Happy |
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if you did finally get an answer, post it up so next time someone can search for it
_________________ Owning 1 of 67612 EF GLi Sedans made
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
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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| ebs_4l |
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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??
_________________ EB 4L, 8.4:1, R154, GT4202r, 4in exhaust, Greenslade Engineering exhaust manifold, plenum chamber, 90mm throttle, Garrett W2A cooler, Surecam custom, autronic SM4, Bosch 120lb, Crane HI-6, LX-92, LM-1, Turbosmart Reg, 2x bosch 044, turbosmart 48 gate. 470kw+ @ 18PSI |
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| EBXR8380 |
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http://www.rosspistons.com/calculator.php
_________________ As in ZOOM 126 edition |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
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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| EBXR8380 |
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Methonol / Ethonal ???
_________________ As in ZOOM 126 edition |
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| Waggin |
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Maybe chasing the unobtainable >200RWKW N/A!
_________________ WAG363: AUII LTD Supercharged 363 Dart Stroker [Supercharged 363 LTD Build] |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
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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| EBXR8380 |
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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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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
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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| ba_xr6turbo |
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U want them for a BA?
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
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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