pullies?

[emperor_lunchbox]

where can i find pullies and a Flywheel for an RB20?and possibly some injectors?

[rb250sx]

talk to justin at up-speed.com. he may be able to help you out.

[93RPS13]

http://www.tophatperformance.com has them and a company called fidzana or something like that make them

[Sil240]

Im working on the Unorthodox Racing PulleyWe measured up my pulley, but were just waiting on demandAs for the flywheel I sent mine out to our West coast machining facility and im still waiting on it to come back

So if anyone is interested let me know[email protected]

[skillzilla]

Id love to get a new pulley, let me know when these are in the selling stage

[Sil240]

Yeah no problem I'll let you guys know

[goofynick6]

I'll take an underdrive pulley...my stocker had some chips which I filled in with weld, but I don't trust it. PLus, our engines are balanced perfectly since they're a straight 6, so losing the rubber damper in the pulley is no biggie here..I love aluminum parts!

BTW- I got my 11lb Fidanza-made aluminum flywheel from Justin at up-speed for $320 shipped...best deal anywhere on the net I'd say...heh.

Nick

[DAEDALUS]

Your engine is balanced from a primary/secondary, external vibration standpoint; it is not balanced with regard to torsional vibrations on the crankshaft. Inline 6 engines actually are at a disadvantage with regard to torsional vibrations because the crank has to be longer than those in a V-configuration...the crank has a tendency to twist more than a shorter crank. The damper has a function.

Sil240, what's your job at UR?

[Sil240]

Im purchasing manager at UR

Actually the rubber in the pulley is just for noise supressionThe RB is internally balanced, the only motors that are externally balanced are like chevy 350's old V8's for the most part i have yet to see a 4 or 6 cyl that was externally balanced

Oh yeah check this out:http://www.unorthodoxracing.com/dyno_300zxt.html

I was looking at the RB20 pulley and the RB26 pulley which are similiar but might be a little different. But they sort of resemble the VG30DETT pulley, except the RB pulley is a little lighterThe RB pulley was like 9lbs, and the VG was like 10-11lbs

[skillzilla]

The VG30DETT pulley is very similar, although the keyed center hole, the part that the crank snout goes into, is either too long or too short (forgot what my machinist said.

If you could make these, Im sure they will sell like hot cakes. Even though I have to pretty much take off the whole front of my car to change it out, Id love to do it and be able to run power steering again (my pulley is also chipped).

[Sil240]

Oh yeah all you gotta do is take out the Radiator hopefullyYeah guys if you are interested speak up because if there is a demand then can push it through

[DAEDALUS]

Actually the rubber in the pulley is just for noise supressionThe RB is internally balanced, the only motors that are externally balanced are like chevy 350's old V8's for the most part i have yet to see a 4 or 6 cyl that was externally balanced

There is a difference between translational vibrations and torsional ones. Every single slider-crank ICE is subject to torsional vibrations in the crankshaft. If you hit the natural frequency of the shaft, the loads couple and stresses skyrocket. This has been a consideration in engine design for 100 years. On 4-cylinder engines, a torsional damper is usually not required because the shaft is so short, the natural frequency resides at around 10,000 RPM. A 6-cyl, especially an I-6, is typically not as lucky. Dyno charts are one thing. I'd also like to see fatigue and strain gauge charts.http://www.nissaninfiniticlub....=3198

[Sil240]

Im not disputing that the torsional Forces are there but the issue is wether or not they're detrimental to the crankshaft.

Our pullies are currently runinng on many cars such as:Vinny Tenn- Toyota SupraJoe Demaree- Honda CivicRhys Millen- Mitsubishi EvolutionRhys Millen- Toyota Supra Pikes PeakCraig Paisley-Toyota SupraPassen Motorsports/Speedvision World Challage GT Class-Toyota SupraLast Minute Racing/99' Speedvision World Challenge- BMW 330Track Racing/Speedvision World Challenge-VW GTI VR6

There have been rumors on the internet that people have been having problems with our pulley but, our parts have been out for 7 years and we have not heard any problems.

[emperor_lunchbox]

Ill take a pulley ... when they are done that is.

[s13rb25]

Id buy them for my 25 today if they were available

[DSMs_Suck]

Fidanza makes the flywheel which means finding it should be pretty easy, just call anyone really that has an account with fidanza.

Pullies, I honestly dunno..

Injectors, look for denso style high imp. top feed. You can also get I believe (dont quote me here) FC rx7 injectors and they are 550 denso high imp. top feeds that will "bolt in". If you still are having a tough time PM me and I'll find you some.

[93RPS13]

yup except the injector harness need to be modified