What kind of bobweight you would have to get down to to internally balance a 3.4 stroke rover with a 3.7"-ish bore.. anyone?
Can this be done with steel rod and no mallory metal?
I would like to use an offset ground 4.6 crank. narrowed SBC rods, BHJ internal balance dampener and redrilled stock 215 flexplate
Tony, I'd measure stock stuff first.305 sbc.forged piston/pin around 440 grams.6" , 4340 rod approx 550 grams, narrowed for sbb rover jrnl. Isn't 4.6L crank internal? Might be a better way, easier f-wheel,1 pc. rear seal, ready for crank driven oil pump and better fillet potential with off-set grind. If you shop around for generic, "tungsten" ,might be less than Mallory. Is the BHJ made for sbb/rover? I use the Fluid Damper for sbc,(mod).How much hp. you gonna feed that 215 flxplt.? I'm thinkin a Rover to be stronger. What auto? roverman.
Im gonna be using a GM 200R4 auto trans.. So I have to use an adapter plate which I already have from KEP.. The British guys use the Stock 215 flexplate (redrilled) because the Rover plate is a 3 piece lump!
The BHJ dampener is for a Buick V-6.. its the same one D&D sells for the 215. If I ever get this thing together in my lifetime it most likely wont be over 375 horse.
Ok, Isn't the V6 dampener, external? I have,"early" Rover, flexplates that are 1 pc. solid w/o.,"wind sock", cut-outs(215 BU.). I like the external-solid design of Fluid Damper, to drive my 6V-71 blower. roverman.
BHJ makes both an internal and external models..
Elastomer/external inertia ring? Steel hub? Thanks, roverman.
Art.. They are the encapsulated elastomer type , Billet Steel Construction .... SFI 18.1 Certified...
http://www.bhjdynamics.com/index.php?main_page=product_info&cPath=1_3_32&products_id=22
Peep the "Rover" link on that page. Nice looking parts.
Yeah. Nic.. The Rover dampener has got some kind of V-belt pulley behind it though.. Might be useful to some.But I didnt think Id use it..
T/A also brands them as their own... But they are made by BHJ..
LOL> Good point. I didn't see that at first. Did you get the answer you were looking for on the no-mallory idea? Is mallory bad? I've got a bunch in my 300 crank now after balancing.
Interesting, I don't think I have any at all in my 340 crank.
Jim
Jim, Internal balanced? Got bob weights?
Nic.. Mallory metal isn t" Bad" per say.. Its just another expense Id rather avoid.
I would like to internal balance my engine.. whenever I get around to that...
Art: Nah, it's external. Makes more work putting a good harmonic damper on it too, not only do I have to cut down a big chunk of steel to make an adapter, it'll have to be milled for balance.
Jim
Jim and clan, Tunsten "might" be cheeper than Mallory metal. They are similar in weight.