The Cal-look Lounge

Hello all

we're setting our race car on a new case and crank (probably wbx case or aftermarket alu) and was thinking about the crank, will a bugpack flanged crank be good for our race engine? it will be in the region of 78-82mm on chevy journals, power in the region of 500Hp for drag racing, can you rely on this crank for this application? we do max 20-25 passes per season, and then we check it again

Also this 6pin and 6bolt design of the bugpack is smaller in diameter than the newer 8bolt of scat's? as it will be easier if we go with the wbx case, thanks for your time

Friendly

Dimitrios

Hi,

I think the Bugpack cranks are very good quality for the money (always been pleased with my Bugpack cranks using them since the 90') and at least there is some control on their cranks they're selling.
One question for you Dimitri; I noticed you're trying to sell 2 SCAT flanged -cranks since a while...did you got bad experience in one or the other way you want to share with us ? Maybe there's a reason you are changing to another brand of crank?

Good luck with your project  ;)

Hello

no please it's a missunderstanding, I sell those cranks because don't have what to do with them, I have already one in my street engine, I just need for the race engine a smaller one 78-82mm because I want the case to be as intact as possible without removing material from it, also I'm afraid of the "little coverage" between the main and rod journals, especialy on a big 86mm with a chevvy rod. Also I have the impression that bugpacks are at least "fair" for their price as you mentioned, and this is why I'm asking, if anyone has personal experiences of those ones, cheers

Friendly

Dimitrios

I use the BUGPACK Flange Crank in my car, Turbo & Nitrous making over 500hp, I know The Red Baron used one also.

I wouldent hesitate is the least to using one. For the money its an excellent part.  .UD.

 I have used two Bugpack flanged cranks and both worked well with no problems, would use them again. Another good crank is made by REVMASTER, that is what I am using now with BMW center main,     Mike

Well

thanks a lot for your inputs, it's exactly what I thought of initialy about those cranks, do we have posibility for all T4 mains on those or they come with T4 center main only? I'm trying to access the bugpack site and won't go through, cheers

Friendly

Dimitrios

The BUGPACK Site has been hacked numerous times and is in the rebuild process. All current (past 10 years) flanged cranks have all type-IV main journals and chevy rod journals.

Thanks for the information Rick.
Does Bugpack have main bearings for these cranks,(all type 4 mains),
and flywheels.
...and do they have a distributer with online ordering?
Thanks.

The only bearings we carry are the conversion (BMW) bearings that allow the use of a standard type-I align bore case. T use these bearing on the number 1, 2 , and 3 mains you will need to to do the center thrust set-up like Jack at Jay Cee Ent does 714-444-4344 (www.jaycee-ent.com). As for dealers on line Vee Dub Parts Unlimited 714-848-8868 (www.vwparts.net) can assist you or you can call BUGPACK at 714-979-4990 for a dealer near you.

Hello Rick

thanks for the info, we will be using a wbx case the later one with the tangs on the bearings instead of dowel pins and the seperate thrust bearing at the flange side, we need also the center main modiification or we can retain the existing thrust surface of the flange bearing? In this case at what size has the case to be linobored -T4 std or other? thanks in advance

Friendly

Dimitrios

Remember that the wbx case has a 1 mm smaller thrust bearing . so you must weld the case or use the center thrust conversion.
My crank 84mm works fine so far :-)

Udo

Hi to all. Quick question, dose Bugpack still makes 78mm flange cranks? Thank you.

I think i found a good solution . Modified original bmw bearing. I try it out this year on my engine first

Udo

I don't think we ever had 78mm in a flanged version. As for now, we do not.

thanks Rick.

hello Udo,
did you have to cut the case for the thrust plates?
Did you make these yourself?
great work! and cool that somebody in europe can do it :)

cheers, Peter

I'm making jigs to use a bearing bronze thrust washers in the rear as factory. The bearings will be the correct OD and ID for the flange crank With plenty of chamfer and oil dimples. They will fit in either type 1 or 4 journals and for the 4" seal. Only as my jig will be made for this. I'm getting close, but sorry not in Europe. Machining will be done through Brothers VW.

Is this an old ad? a 78mm flange crank is listed.









 


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Home ::  ENGINE ::  FLANGED CRANK & FLYWHEEL



FLANGED CRANK & FLYWHEEL
 

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Totally forged (Both Crank & Flywheel) and totally bulletproof! Flanged configuration delivers maximum contact area…while the 6 bolt, 6 pin design eliminates flywheel loss. Available in all popular combinations and options offering you everything you need for your ultimate high horsepower engine. In stock for immediate delivery!
 
4000-25 Forged Flanged Crank 78mm, Chevy Journal
 4000-31 Forged Flanged Crank 82MM, Chevy Journal
 4000-26 Forged Flanged Crank 84MM, Chevy Journal
4000-27 Forged Flanged Crank 86MM, Chevy Journal
 4000-28 Forged Flanged Crank 88MM, Chevy Journal
 4099-20 Forged Flanged Flywheel 12V 200MM Clutch
 4099-21 Forged Flanged Flywheel, J&G clutch
4099-22 Forged Flanged Flywheel 12V Tilton Style Clutch
 4099-24 Flanged Flywheel (ARP) Bolts, 6
 4000-70 Special Main Bearing Set, Flanged Crank
 4000-71 Flanged Crank Flywheel Seal
 4000-72 Input Shaft Bearing for Flanged Crank
 4000-60 Spl. Cntr. Main Brng, 411 Inner w/T-1 Outer Dia.
 
•CRANK FEATURES•
 
•Forged from 4340 Chromoly Steel
 •Type IV Center Main for Rigidity
 •2” Rod Journal (Chevy)
 •Split Main Bearing Sets Available
 •Nitrided Bearing Surfaces
 
•FLYWHEEL FEATURES•
 
•Forged (not machined from billet)
 •Original Factory Surface Hardness
 •Two Models -Standard & Tilton
 •Special ARP Flywheel Bolts Available
 •Heavy Duty 12V Starter Ring Gear
 

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http://bugpack.com/index.php?main_page=product_info&cPath=2&products_id=5
this is better.

No machining for the bearings. only for the seal .
Yes , i do it at my shop.
Udo

Looks intriguing Udo!

Care to educate? What process is used to cut the thrust bearing?

TxT

I eroded it , i think it is the only way to do it

Udo