| [ Total Views: 1795 | Total Replies: 27 | Thread Id: 102499 ] |
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 mangrovejack38
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| posted on June 21st, 2013 at 08:51 AM |
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wtd pobjoy crank
anyone out there have a pobjoy crank they want to part with?
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cnfabo
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| posted on June 21st, 2013 at 09:48 AM |
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You most lickly will have to find a German crank that has not been ground on the gournals and is straight and send it to him,. Or you could go DPR in
america
Fabo
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on July 19th, 2013 at 10:42 PM |
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good luck finding a 'used' one that's not cracked to pieces..........if you do find one, get it crack tested before handing over any $$$
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colin
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| posted on July 20th, 2013 at 11:33 AM |
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| Quote: | Originally
posted by cnfabo
You most lickly will have to find a German crank that has not been ground on the gournals and is straight and send it to him,. Or you could go DPR in
america
Fabo
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Get a DPR, quality is awesome.
Cheers Col
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on July 20th, 2013 at 05:57 PM |
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| Quote: | Originally
posted by colin
| Quote: | Originally
posted by cnfabo
You most lickly will have to find a German crank that has not been ground on the gournals and is straight and send it to him,. Or you could go DPR in
america
Fabo
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Get a DPR, quality is awesome.
Cheers Col
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Colin and Cnfabo are right. DPR produces quality cranks and are a LOT better value.
http://dprmachine.com.s152704.gridserver.com/products/crankshafts-type-i/
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 matberry
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| posted on July 20th, 2013 at 07:51 PM |
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x4 for DPR
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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cnfabo
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| posted on July 20th, 2013 at 11:56 PM |
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X29 it will be easier just ordering one from DPR....
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66deluxe
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| posted on July 21st, 2013 at 07:27 AM |
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I ordered a 78 counterweighted crank with lightened flywheel from DPR was approx $600 including shipping.
This is my Volkswagen, there are many like it, but this one is mine. Without me my Volkswagen is useless, without my Volkswagen, I am useless.
61 Karmann Ghia 2110cc type1 w Los Panchito's
66 Deluxe Beetle 2270 type 4
10 Subaru WRX Impreza
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fish26
A.k.a.: benito
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| posted on July 21st, 2013 at 11:04 AM |
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you can make 180HP and 8000rpm on a German stock non counterweighted properly built crank, find a good one and call me, I will get it done for you.
Second option DPR, DMS, Pauter
bitten by the bug..........several times
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hellbugged
A.k.a.: Daimo Pell
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| posted on July 21st, 2013 at 03:57 PM |
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 expected engine life?
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fish26
A.k.a.: benito
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| posted on July 21st, 2013 at 08:06 PM |
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well we all know engine life expectancy is not just about the crank 
come to think of it, a nice Berg Welded 69 crank is available on cal-look.no
bitten by the bug..........several times
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hellbugged
A.k.a.: Daimo Pell
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| posted on July 22nd, 2013 at 09:48 AM |
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True. Being the "heart" of any engine but, it's quite important its known weaknesses/ design flaws/inherant shortcomings are addressed to provide
the rest of the components a sound basis to work from. Those DPR cranks are good value $$$ start point for addressing the well known issues and risks
of spinning a standard crank through 8000rpm
HP figures are not always stated with longevity in mind either.
Always interested to hear of different ways to get the job done tho, what tricks you doing !?!?
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fish26
A.k.a.: benito
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| posted on July 22nd, 2013 at 02:01 PM |
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I doubt he's building an 8000rpm engine but it's definitely possible on the German Forging even without counter weights.
Biggest trick is to keep the rotating assembly light and balanced, then there is micro-polish, 8 dowel, etc.
I have a Pobjoy crank in the garage 0.10, 8 dowel, non welded.........not sure I want to sell it alone.
It's going in a 1835cc thickwall, Pobjoy Heads, Bugpack Rods, Bugpack Straight cuts, GB 310, Scat Rockers......
bitten by the bug..........several times
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on July 22nd, 2013 at 02:53 PM |
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| Quote: | Originally
posted by fish26
I have a Pobjoy crank in the garage 0.10, 8 dowel, non welded.........not sure I want to sell it alone.
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So what you have is a VW crank that has been ground and has 8 dowels......what makes it a pobjoy ?
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matberry
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| posted on July 22nd, 2013 at 02:56 PM |
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^^ maybe Stan forged it?
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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fish26
A.k.a.: benito
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| posted on July 22nd, 2013 at 04:02 PM |
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LOL.......Stan didn't do anything just put his name on it, supposedly came out of a "Pobjoy" 1915cc and I'm not stating that "his" crank will go
to 8000rpm, all I'm saying is a German Forging can be made to.
bitten by the bug..........several times
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mactaylor
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| posted on July 22nd, 2013 at 05:24 PM |
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heads and cam make the revs, everything else makes it stay together. no arguments!
EVERLAST CONCRETE TANKS
1800 552 123
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matberry
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| posted on July 22nd, 2013 at 05:56 PM |
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| Quote: | Originally
posted by mactaylor
heads and cam make the revs, everything else makes it stay together. no arguments!
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So true
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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hellbugged
A.k.a.: Daimo Pell
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| posted on July 22nd, 2013 at 06:05 PM |
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| Quote: | Originally
posted by fish26
I doubt he's building an 8000rpm engine but it's definitely possible on the German Forging even without counter weights
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Yeah that's what I thought you were saying
.....and I was just wondering what tricks are used to stop the crank flexing, case getting flogged out, bearings running dry, seizing and the
following catastrophic failure of an entire engine's assembly canabilizing itself @ 130 bites a second 
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on July 22nd, 2013 at 06:06 PM |
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| Quote: | Originally
posted by fish26 all I'm saying is a German Forging can be made to.
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Yep, that's been proven all over the world for decades.
| Quote: | Originally
posted by fish26
you can make 180HP and 8000rpm on a German stock non counterweighted properly built crank, find a good one and call me, I will get it done for you.
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So what do you mean by 'properly built crank' if it doesn't have counterweights welded to it ?
Do you get your ones done locally ?
If I gave you a standard "virgin" german crank, what will be done to it (and cost) to make it a 8000rpm crank......without it having counterweights
?
Cheers
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bigrudi
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| posted on July 22nd, 2013 at 08:04 PM |
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the crank might do 8000 with a std german crank but the shitty mag case will be floged out in a very short time with out counter weights, dpr way to
go 360degree counter weightsl drilled lightened blade ground 9000 baja tested rpm in an alloy case all day long, prefer to get my power from e85 boost
and freindly to the planet , heard an l big may run at the easter meet at mt panorama next year cheers Rudi ps ive got a pobjoy crank in a complete
1916 minus heads ready to go pm me if u want more details
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fish26
A.k.a.: benito
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| posted on July 23rd, 2013 at 12:13 AM |
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Never played with full circle counterweights so cannot comment just letting OP know what's possible.
If he definitely wants a Pobjoy crank he should just get one, also lets not forget the amount Stan and others like him have contributed to our hobby
and let people decide for themselves which way they want to go, not that Stan's engines are my cup of tea but that's just my opinion.
Heads and cam create power together with induction and exhaust and allow the engine in their combination to breathe more efficiently at higher RPM,
they don't just create rpm, they affect rpm which are created by the whole engine combination. No Arguements. It's all about the purpose of engine
combination and quality of parts and assembly.
It's misinterpretation of information on these forums that sometimes steers newbies to the hobby in stray directions and impending let down.
Eg.
Hi flow heads, welded, hand ported, large valves
Hot cam FK87
Monza exhaust
Single 34
Stock rotating assembly
Who thinks this "hot" combination will rev past 4000
Craig, I'm happy to give you the details of who I believe is the best crank grinder around, you can let him know what you need but sarcasm won't fly
with him and he'll let you know about it.
bitten by the bug..........several times
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mangrovejack38
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| posted on July 23rd, 2013 at 07:56 AM |
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never mind,didnt think it would start all this
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on July 23rd, 2013 at 10:20 AM |
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Action Cranks at Wetherill Park gets my vote.
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QuikBug
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| posted on July 23rd, 2013 at 10:59 AM |
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Hey Craig
Don't understand mate you use to be one of Stan's disciples, while I think he is a great machinist, you used to preach that the guy walked on water
!!!!
Why the 180 ?
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vassy66T1
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| posted on July 23rd, 2013 at 11:23 AM |
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mangrovejack, take up Bigrudi's offer. Send him a PM.
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fish26
A.k.a.: benito
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| posted on July 23rd, 2013 at 11:43 AM |
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You're on the ball Craig Bob is the best there is.
bitten by the bug..........several times
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petemart
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| posted on July 23rd, 2013 at 12:45 PM |
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Hey Ben and Craig, it looked like you two where starting to get a little crank-y with each other 
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