RV8 Custom crank

[rrrover 5L]

Powder coat, hmmmm. Thanks for that thought, Jim:-)

What a picture library you have Greg! The generous store & sharing of knowledge on this site is phenomenal.

Some flanged 3.7 bore diesel "C" sleeves would fit nicely into that P76 block......

[Greg55_99]

Well... like they say.... "Go BIG.... or go HOME..."

Greg

[rrrover 5L]

OK, finally got a cable to upload Bryant SBF pics...Here they are





I will get an opinion & cost from a crank grinder of the mods required....One BE journal is fried so the idea is to go Honda which should give me 3.550 stroke, too.


Cheers

John

[roverman]

John, Somewhat important, does sbf use #3 main for thrust ? Main sizes ? Thanks, Art.

[rrrover 5L]

Art, yes, the SBF uses 3 for thrust, same as Rover. I'll measure mains & post shortly.

Cheers

John

[roverman]

Clan, Ford raw forging will make 3/8" min. on spigot length. Is this enough compared to late cranks at 5/8" approx ? Scat needs to know. Onward, roverman.

[roverman]

Or widen the rod journals ? Rod offset in the bore ? Anybody ?  roverman.

[flitner]

http://bbs.homeshopmachinist.net/showthread.php?t=46462&highlight=crankshaft
Here is a gent that I believe could help you out, if i remember correctly he is in the UK and completely rebuilt this machine for doing Merlin crankshafts.
My correction Southwest of Glasgow Scotland, sorry!

[willbowen]

To All;

http://www.marinecrankshaftinc.com/


Yes we can make a crank for that engine. That's basically the same engine that is used in the Land Rover, isn't it?
Cost is $2800 with about a 12 week turn around time. Let me know if there are any special dimensions (journal sizes etc) that you need.

Regards, David Eden

[jfjfjf2]

William - Thanks, that's interesting. If I have one more delay by the people I've ordered from, I'll be cancelling my order and giving these people a ring.

Julian

[roverman]

Julian and clan, I seem more likely to win the Lottery here, than get a crank out of Scat ! 5 months and nothing ! Good news is, I  spoke to David Eden. He seems knowledgeable, and they have made these cranks before. Being within driving distance, is a plus.  roverman.

[jfjfjf2]

Art - 5 months? 5 months is nothing, they work on the geological time scale. I've waited 10 months for a quote.

Backwards,

Julian

[roverman]

I spoke to "Tom" at Scat. They have hired (3) more enginneers and are catching-up. I am to check back next week. Ford 302 raw forging, has better suited counterweights than Windsor, and has a stroke potential of 3.5-3.55".  Onward, roverman.

[roverman]

According to Scat, sbf raw forging will not work ! Luckily, Mickey Thompson and Lance Reventlow, didn't "Know" this. Scat will make a billet crank for $2,800, in 8-10 weeks.  roverman.

[roverman]

So, 4340 billet steel cost from 32.5cents/lb.,(China/1 ton min.), to $6.60/lb., local for 190lbs. Water jet the profile-unknown. Considerable hours of labor, without millions of $'s of equipment, is a given. Onward, roverman.

[roverman]

I now have a Rover single-plane crank drawing. Now to get bids.First choice is RPM. Onward, roverman.