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Thread: Buying rb25/30 rebuilt engine but want to change pistons & rods

  1. 02-05-2011, 08:28 PM #1
    vl_2010
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    Default Buying rb25/30 rebuilt engine but want to change pistons & rods

    hi, so ive tracked down a rebuilt rb25/30 to go in my vl, now the only thing im curious about is the pistons and rods, the ones in there are for a turbo setup so not enough compression so im thinking of putting a piston ive found which gived 9-1 compression and a set of arias forged rods rated up to 10000rpm, im thnking of running 7500-8000 rpm. is it a simple swap over of pistons and rods? or something else will need to be done? any help appreciated
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  2. 15-05-2011, 02:40 PM #2
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    ari666
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    need to balance the crank to suit the new piston/rings/rod combo

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  3. 15-05-2011, 02:53 PM #3
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    db_notso
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    agreed and the obvious gaskets and all bearings to suit new caps to other crank...
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  4. 15-05-2011, 04:10 PM #4
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    can you clarify what an RB 25/30 is?

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  5. 15-05-2011, 06:15 PM #5
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    rb30 bottom end rb25 twin cam head
    Quote Originally Posted by Smidy
    How many kw would i need to beat vin diesil to the train lines?
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  6. 16-05-2011, 08:45 AM #6
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    ah i see. now clarify why you wouldnt fit a turbo to it

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  7. 16-05-2011, 08:52 AM #7
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    Quote Originally Posted by ari666 View Post
    ah i see. now clarify why you wouldnt fit a turbo to it
    exactly what i was thinking, just turbo it, the motor is already built for it
    Going where no late model stato/caprice has gone before.... GAME ON!!
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