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Old 02-17-2005, 07:45 PM   #1
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Default RB Concept Engines

I'm about to get a RB WS7-II and looking at running 30% fuel in it. It says that you have to add shims to the head to run anything higher than 25%. Well I looked at purchasing some RB head shims and they have 2 types of shims: long-stroke and standard. I can't find any where that says if the engine uses long-stroke and standard. Also how many extra shims would I need and what size? Thanks in advance.
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Old 02-24-2005, 06:51 AM   #2
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You could take a look at the exploded view ( http://www.rbproducts.com/explose/RB.../01004-WS7.pdf )

The part numbers for the head shims are there.


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Old 03-15-2005, 02:38 PM   #3
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Why have you decided to use 30, not 25 to avoid having to use shims
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Old 03-15-2005, 07:08 PM   #4
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The stock engine runs perfect on 30% without adding extra shims. The reason I don't use 25 is because LHS doesn't carry it; only nitro in increments of 10. I just run a little colder plug than usual. I love this engine once I got the right pipe. BTW don't use a Jammin JP-1 pipe on the WS7-2; it kills the bottom end power.
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Old 03-23-2005, 09:12 PM   #5
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Yeah I never had to as any shims to my RB's to run 30%. Nismo what pipe you running now? I like the 2050 with my S7's.
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Old 03-23-2005, 10:54 PM   #6
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I'm running a Jammin JP-2 hard anodized pipe. Very sweet pipe. Works a hell of alot better than the JP-1.
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Old 04-11-2005, 11:10 PM   #7
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glad I bought the jp2 tonight instead of the JP1. I am also running the WS7II and was debating on one or the other.
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Old 04-12-2005, 10:14 PM   #8
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Need help with id of this engine:

Soposed to be, a .12 V12 Rody part #01700-000425

I'm just not sure. The crank doesn't look right. It looks more like the 01700-000445. I don't know if being built in late '03 makes it a 425 crank. I bought this used so I don't have the box. Any help you can give me will be great. Thanks.

Pic of crank:
Attached Images
File Type: jpg hpim0439.jpg (125.3 KB, 1568 views)

Last edited by Striker; 04-12-2005 at 10:38 PM.
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Old 04-12-2005, 10:15 PM   #9
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Pic of # on block
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Old 04-12-2005, 11:00 PM   #10
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is that rust in the first pic there?? on the crank an around the con rod??
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Old 04-12-2005, 11:21 PM   #11
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Maybe a little. No more than any other engine I've ever opened up.
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Old 04-13-2005, 05:28 AM   #12
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Default turbo button for RB x12 #215

I have a non turbo RB x12 #215 engine. I am looking for the turbo button for it. Does anyone know where I can find one?
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Old 04-14-2005, 01:59 AM   #13
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Quote:
Originally posted by JOK3R
is that rust in the first pic there?? on the crank an around the con rod??
the way i see it in the pics i think you are right but i hope we are wrong because that engine will have some trouble sooner or later
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Old 04-15-2005, 11:37 PM   #14
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All engines have trouble sooner or later.
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Old 04-17-2005, 09:08 PM   #15
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hmmm youre not using after run oil, are you? just a quick brush of dremel or sandpaper and then metal polish and its good as new.

JP-2 is good for WS7II and JP-1 for S7II (which I have)
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