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Engine rebuilding advice. 

 

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 Post subject: Engine rebuilding advice.
Posted: Sat Feb 25, 2006 5:31 pm 
Getting Side Ways
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Hey guys..

I'm looking at building a turbo engine and i've read that low to mild boost situations are achievable with a normal engine rebuilt with acl race series rebuild kits..

I've bene checking out the acl race series site ( www.aclperformance.com.au ) checkin out the ford 4.0L engine kits..

http://www.aclperformance.com.au/Ford4. ... ildKit.htm

Just a few questions...

I've been looking at the piston kits ( http://www.aclperformance.com.au/6MKRY9400.htm ) and under sizes it has: 0.5, 1.0

I'm guessing these are 5thou over std and 10thou over std? so will need to be bored out..

I've also heard that shot peened con rods are they way to go... any ideas where to get this done? engineering place where they do block machining should be able to get it done for me? and how much?

So just to wrap it up for now..

How much, ballpark figures:

Rebuild Kit? (visted repco today and they had to ring acl (acl ont open saturday))
Cylinder Bore + Hone?
Conrod shotpeening?
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Posted: Sat Feb 25, 2006 7:33 pm 
Fordmods Junkie
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yes the .5, and 1 would be 5and 10th over bore
depending on your state of the current engine will determine if the bores need to be bored out and then honed

shotpeened rods are good as it leaves a "protective" skin around the rods and is achieved by shooting small ball bearing at high speed at the rods

also a full bottem end balace is a good idea will make the engine spin faster and easier :)

any decent engine shop should be able to do or tell u were to get all this done


you are best off talking to a a engine shop who do rebuilds and ask them what is the best way to go

ie how much boost u going to run? 6 psi be fine on normal compression but any more u will want to look at lower comp pistons etc

 

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Posted: Sat Feb 25, 2006 10:31 pm 
Getting Side Ways
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race series rebuild kit for the 4.0L I6 is around $800-$900

comes with pistons/rings/bearings. And a cool sticker.

dont know about shotpeening, but i got quoted $500 from an engine shop to do the following:

fit pistons to rods
hot tank block
bore 10 thou over
hone the bores
fully balanced the bottom end
linish the crank

 

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Posted: Sun Feb 26, 2006 12:17 am 
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it's .5 1.0mm wich is 20thou and 40thou.

ACL also do a low compression forged piston for the 4L ohc engine.
(made by mahle)

 

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Posted: Sun Feb 26, 2006 10:39 am 
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Quote:
ACL also do a low compression forged piston for the 4L ohc engine.
(made by mahle)



really? i've never seen it on their site before...very interested. Do you happen to know if they have a rebuilt kit with these forgies? and if they are expensive?

 

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Posted: Mon Feb 27, 2006 10:58 am 
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Just rang repco about the race series rebuild kit..

asked for a price on part number RAC9400CBB1 - thats 0.5mm oversize...

got told $772 for the kit.

So just to let people know what i got told it costs by repco.
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