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Right pistona for Turbo Ef 6cyl 

 

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Posted: Mon Jun 19, 2006 9:20 am 
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If your interested I might be selling a set of brand new rods (6) plus Fordged Pistons (6) to suit any I6 Motor from EA - BA.

Pistons alone cost me $1,400

 

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Posted: Mon Jun 19, 2006 9:46 pm 
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Saiken wrote:
also if we are getting ACL pistons what ones would i need????

-Ford 4.0L BA Turbo (Barra 240T)Forged Pistons - 6MKRY9710
-Ford 4.0L EF-EL Cast Pistons - 6MKR9400EF

**note im looking at running around 600hp at the flywheel**


BA Turbos don't have forgies from the factory... So is this the Ford part no. or an Aftermarket part no.?

 

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Posted: Mon Jun 19, 2006 10:02 pm 
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they are the ACL part no.

 

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Posted: Tue Jun 20, 2006 8:48 am 
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for 600hp at the motor i would not use the BA turbo pistons or rods.

Rods are good for 300rwkw any more and you should go i or h beam fordged rods.

 

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Posted: Tue Jun 20, 2006 9:38 pm 
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balizticbobo wrote:
Saiken wrote:
also if we are getting ACL pistons what ones would i need????

-Ford 4.0L BA Turbo (Barra 240T)Forged Pistons - 6MKRY9710
-Ford 4.0L EF-EL Cast Pistons - 6MKR9400EF

**note im looking at running around 600hp at the flywheel**


BA Turbos don't have forgies from the factory... So is this the Ford part no. or an Aftermarket part no.?


the ACL forged are made by mahle pistons. (ACL mahle same people these days) and for that much power you want to use the forged ones. and a suitable BA length rod to go with it

 

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Posted: Tue Aug 22, 2006 8:04 pm 
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sorry to Re start the thread,
but i have gathered that standard rods polished and nitrate treated are plenty for a 300rwkw setup, but what are they worth to get to this stage, included boring out for the bigger arp bolts.
and i assume these are out of an eb-ed 4.0l motor?
also with the pistons, ihave read a series of names and prices, but without using BA pistons, how would i bring my compressions ratio to atleast 8.6:1? basically, with a seteel au thicker gasket and what pistons?
keeping in mind it only has to support a max of 300rwkw.
Also, Ebs 4l, i have looked for ages and i dont know what internals you are using rod/piston wise for such a low comp ration, but i did here you mention the ACL race series...but there 9.6:1 arent they? if it is these you are using, how did you get your comp. so low?

cheers,
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Posted: Tue Aug 22, 2006 9:35 pm 
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all u need is the 3.9 acl race pistons with the 11cc dish, the au gasket isnt thik, it actully thiner than the el one. but u still should use it. with the 11cc dished pistons and a none 3.9 head + au gasket u should be around the compression ratio u want, might need a little cc'ing of the combustion chamber.

 

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Posted: Tue Aug 22, 2006 9:50 pm 
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The motor i was rebuilding is an ED 4.0L
so are you saying i should keep the 3.9 head?
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Posted: Wed Aug 23, 2006 1:10 am 
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you will think my combo is dodgy, but here goes..

i have acl race 4l pistons. yes 9.6:1 std. (long story but already were fitted) should use 3.9 race pistons

std rods with resized ends, crack tested, weight matched, still with original factory rod bolts

and i have taken 2cc out my chambers

and i have used a decomp plate with an au gasket on either side

ended up at roughly 8.4:1, currently holding 17psi boost, will see about 350rwkw from it

 

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Posted: Wed Aug 23, 2006 7:00 pm 
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what did that setup cost you?
and with using 3.9 acl RS pistons, should i use a 3.9 head aswell?
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Posted: Wed Aug 23, 2006 8:49 pm 
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no use the 4l head with the 3.9l pistons.

 

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Posted: Wed Aug 23, 2006 9:32 pm 
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ok... i will :)
acl race series 3.9's standard rods with the same as what ebs 4l has done with decomp plate and steelies...cheers guys :)
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Posted: Wed Aug 23, 2006 10:57 pm 
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u wont need the decomp plate with the 3.9 pistons and 4l head

u will just need, 3.9 11cc pistons, and a none 3.9(ea) head and 1 au head gasket.

 

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Posted: Thu Aug 24, 2006 12:32 am 
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no need to use 3.9 head..

the 4l is better, and starts out with a better chamber, the 3.9 head has the large swirl ridge that needs removing anyway

if i had 3.9 pistons, then i wouldnt have used a decomp plate

there is 7cc piston dish difference between 3.9 and 4l race pistons

the added benefit, is getting 3.9 pistons in +0.040" 1mm, is you only need to bore the 4l block about 0.004" or so, from memory.... something like that anyway

 

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Posted: Thu Aug 24, 2006 7:50 pm 
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cheers fellas...as soon as my motor gets here, im goin shopping for these bits..maybe you'll here how i go, or maybe youll get alot of questions about all my problems, :P cheers guys

EDIT:
Fritzz, what do you mean by "none" 3.9l Head...do you mean don't use it or do you mean do something to it...just a little confused
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