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Spoolup

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Posts posted by Spoolup

    Spool Rb34

    in RB30 conversions

    Posted

    Wholly crap - look what happens when you leave the computer for 24 hrs.

    Im sorry I have pissed you off Rob as I totally respect what you guys do and have done - and I dont even know you or have never even spoken to you.

    Firstly some facts for all readers:

    This kit is made here in Brisbane Australia - not China, so it will not be as competively priced as my stroker cranks and rods, which is what I was referring too originally.

    I never designed, manufactured or did the R&D on this kit.

    A couple smart guys I know with a lot of expensive machinary made one of these kits for their own race car. In the process of dealing with them ( as they buy my rods and pistons ) we decided that they would manufacture them and I would market them. If it wasnt me who took up this offer then it would have been someone else.

    I originally decided to use one of these kits for my trial engine as the counterweights on my 95 mm trial crank foul on the OEM girdle when it is torqued down ( ie the diam of the crank was made a couple mm too big ) So the billet caps and girdle solved that problem for me.

    They did not buy a RIPS kit and copy it, they engineered it themselves.

    This idea has been around for along time - in various designs. Regardless of who was the first to manufacture and market it.

    The kit is slightly different ( ie if you were to overlay them they would not be exact ) as it was not copied identically from a RIPS kit, but there is only one way to make this kit - 7 caps and one girdle.

    Its healthy competion Rob - as mentioned in this thread there are others out there already making similar or the same. There will be numerous similar kits available before the end of this year Id guess. Same for RB30 stroker kits.

    If it was a patented registered design ( which it is not and can not be ) I would never even have considered it.

    • Like 1

    Spool Rb34

    in RB30 conversions

    Posted

    Yes it basically comes down to manufacturing costs.

    I would say because it would cost about 1/5 of the price to manufacture. while still retaining the strength esp if there Capscrews that are holding the 2 parts together.

    Regards

    Chris

    Spool Rb34

    in RB30 conversions

    Posted

    Argos are made in Aus

    Eagle, Scat, Brian Crower, some of the Jap brands are made in China - Paul and I have had this discussion before :-)

    Not many pistons are made in China - yet

    That is interesting most conrods are made in china, I guess they've picked up their game?

    Paul - where are argo rods made and mahle pistons?

    Spool Rb34

    in RB30 conversions

    Posted

    Cranks are made of billet 4340 - manufactured and finished in China. Same as the conrods I sell

    I have the steel analysed on a mass spec here in Aus in a NATA certified lab. It always meets the 4340 std.

    Sizing is checked here in Aus also.

    The majority of conrods and cranks in the world today are made in China.

    Yes the billet caps will be available also as a kit - they are made here in Aus.

    Spool Rb34

    in RB30 conversions

    Posted · Edited by Spoolup

    Paul - I wasnt just directing my comments to you, but in general.

    The crank in the pics is one of the trial 95mm stroke cranks I have - its actually quite easy to install just not a direct plug and play.

    The tunneling boring issue was done by someone I dont usually use - as your aware not alot of places offer that service so I had to go to someone else.

    The guys I use for all my other machining are slow but extremely pedantic and it would take alot for me to change.

    Where are you situated ? as I am in Qld ?

    As soon as I have this trial engine assembled and running etc, and Im happy with the install and worked out all the bugs, both cranks will be produced available in full counter weight.

    At present Im still confident the 95mm, 8 counterweight cranks I have will work fine for what they were designed for.

    Spool Rb34

    in RB30 conversions

    Posted · Edited by Spoolup

    Hi guys,

    I don’t get on here much anymore. Someone informed me I should make an appearance on this thread.

    These forums are a brilliant source of information, a wealth of knowledge and a great place to express your interest in all things automotive , but they also harbour a lot of misinformation, accusations and innuendos.

    So if you have any queries about this topic just email me direct, its easier.

    Now there has been a big delay with the first trial engine due to incorporating a trial billet main cap design at the same time. Will post pics later today.

    These caps require tunnelling boring and the machine shop that did it for me the 1st time made the tunnel a couple thou too big, so it had too go back and be modified. This all has taken a lot longer than expected.

    Anyway I have only just received the block back last week so assembly will start soon with the prototype crank etc.

    In the process of designing this setup I have decided to make 2 kits available – one will be 95mm and the other will be 93 mm. As the 95 mm stroker does require some block clearancing and isn’t a straight drop in kit . The 93mm crank is going to be full counter weight and will be an easier install.

    Both cranks will be available by them selves or in a complete kit with rods and pistons to suit.

    These things take time and I am more anxious than you guys to get this finalised as there are numerous other cranks I have in mind to stroke.

    I know my pricing will be extremely competitive so hang in there if your interested.

    Brad

    [email protected]

    Spool Rb34

    in RB30 conversions

    Posted

    Trial engine is being machined at present - having a few issues as the block is running individual main caps with an interlocking girdle plate ( interlocks caps with block ).

    Anyway hoping to have the block back in a week or so - then can fit head and install.

    I wont sell any kits until Ive personally trialled this set up - so stop asking :-)

    Spool Rb34

    in RB30 conversions

    Posted · Edited by Spoolup

    price will be around $5900 - depends on the US dollar when I order the pistons. ( Crank, rods, ARP 2000 rod bolts, CP pistons ( rings pins and locks ) - ACL race series bearings )

    But wont be more unless we have another GFC

    Spool Rb34

    in RB30 conversions

    Posted · Edited by Spoolup

    details are :-)

    Hi guys

    I have 5 cranks and 5 sets of rods here now.

    I have a block being machined etc at present - it will all be ready in a couple weeks.

    I will be removing the engine in my car and installing the RB34 engine.

    I hope to have it all up and running by mid Feb.

    Ill keep you all posted.

    The cranks I have are 95mm, these require a little bit of clearancing of the block ( there is only so much room inside a RB30 block ) if running a bolt on oil pump or external pump.

    Cranks are limied to 95mm for this setup.

    I think Ill offer 93mm stroke cranks also in the future - as these will be a drop in set up, no clearancing required.

    Finishing Up Forged Cp Piston Rb30 Build, Few Q's

    in RB30 conversions

    Posted · Edited by Spoolup

    Jarrod,

    The pistons are designed with no oil squirters in mind.

    Ive seen 1154 rwhp with no oil squirters - though it was no enduro car. Just a dyno queen.

    Though my engine has been going strong for nearly 3 years with no squirters.

    Oil squiters were really designed for non forged internal engines, Nissans way of ensuring longevity from cast pistons in a production car. Great if you have them but not worth the effort and expense in an RB30.

    Ceramic coating is a excellent option and relatively cheap now.

    Crank Strength And Upgrading Options.

    in RB30 conversions

    Posted

    My point was that this setup was never designed to be a big rever.

    It was designed to ( compared to the equivalent setup in an normal stroke RB30 ) to make considerably more torque, bring boost on earlier and make same power with less boost and less revs.

    So if it makes the same peak power as my current RB30/25 with less boost and less revs, and more torque and comes on boost earlier - Ill be happy.

    If it revs to 7500 rpm then it realisticly should make more peak power than my current setup as that is what Im revving it to now, due to the increase in capacity.

    Crank Strength And Upgrading Options.

    in RB30 conversions

    Posted · Edited by Spoolup

    As these are the trial / prototype cranks we just copied the std crank. The std crank does a terrific job and sees 10000 rpm in serious drag engines. Why reinvent the wheel. Having said that - if I have any dramas with these cranks its an easy job to have the next version redrawn into full counter weight cranks.

    I have had the cranks checked and balanced here in Oz - all good.

    Yeah I was going to say how did you do all the calculations for the size and shape of the counter weights and balance it?
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