New 3.9 Piston Heads Source? - Defender Source
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  #1  
Old December 24th, 2015, 11:59 AM
gwmckee
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George
1994 NAS D90 #1919
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New 3.9 Piston Heads Source?

I'm having my 3.9 reconditioned and the cylinders need bored out due to wear. Shop asked if I could source some new piston heads at .020 over. Anyone know of a reasonable source for good quality parts?

Thanks in advance and Merry Christmas!
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  #2  
Old December 24th, 2015, 01:16 PM
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Chris Davis
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I did the same thing for my 4.6. I ordered my pistons from Real Steel in the UK. Real Steel
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Old December 24th, 2015, 10:26 PM
gwmckee
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George
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Thanks a ton, Chris! They look promising

Merry Christmas!
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  #4  
Old December 25th, 2015, 11:23 AM
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aluminum v8...is an american source, they specialize in rover engines.
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Old December 26th, 2015, 09:21 AM
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George
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Thanks, Carlos! I appreciate the help.
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Old December 26th, 2015, 11:45 AM
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Chris Davis
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I am curious where American V8's quote comes in. My set of pistons, at the time, were just under $200 (for 8) from Real Steel and American wanted close to $600 set (or was it $800?). At 3+ times the cost, including shipping, I couldn't justify American V8 but they would have been my first choice. I'd be curious to know what you go/went with!
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Old December 27th, 2015, 11:51 PM
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George
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Well, I'm still considering options at this point. Mark at AluminumV8 suggested that I have him re-sleeve the block, since my pistons are fine. Cost quoted was $2k. He also suggested I put in a performance cam kit as well as a new stud kit for the heads and a set of Hastings moly top rings. All in it would run about $2,700. Thoughts?
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  #8  
Old December 27th, 2015, 11:58 PM
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Cheaper than an LS conversion.
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  #9  
Old December 28th, 2015, 12:02 AM
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Brian Kandefer
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Quote:
Originally Posted by Davis View Post
I am curious where American V8's quote comes in. My set of pistons, at the time, were just under $200 (for 8) from Real Steel and American wanted close to $600 set (or was it $800?). At 3+ times the cost, including shipping, I couldn't justify American V8 but they would have been my first choice. I'd be curious to know what you go/went with!
be careful about comparing prices, Britpart/ All makes parts are considerably cheaper then genuine. And I would never put anything but genuine in a motor build.
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  #10  
Old December 28th, 2015, 12:15 AM
gwmckee
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George
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Thanks Brian - what are your thoughts on re-sleeving and using the original Pistons vs boring out the existing sleeves and putting in 20 over replacement Pistons?
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  #11  
Old December 28th, 2015, 12:21 AM
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Brian Kandefer
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Really all depends on what you want the end product to be. For best long term results re sleeve the block, top hats are a great product as well. Even if you bore it over they will have to sleeve it as well. If you are going for more displacement buy a 4.0 or 4.6 block and run the older style front cover with 4.6 Pistons.... Many different options for a lot of different results. Budget will dictate what direction you go.
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  #12  
Old December 29th, 2015, 02:36 AM
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Strange thread! If you go 0.20 over you wont be able to go over again safely in that block meaning that the 700 or so for piston heads 120 or so for the pins, 200 or so for the bore labor & another 200 or so for installing the piston heads will be $ lost!

Considering that the 3.9 most always NEVER needs over boaring, NEVER drops liners like the 4.6 does, is the most reliable V8 of the pre 04 rover engines and costs about 200 to buy for a usable core that just needs a honing of tye cylinders at 50 for tye block and new piston rings at 120 or so I think its clear what the obvious cource of action is!
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