Bongi

Hi Guys

I’m buying a RB TM928 for my ST, just wondering which pipe suits this combination. I have been looking at a Mielke pipe as well as a JP4; so far I think a JP4 would be better. Any better suggestions?

Cheers

Foxy

RB 2045. I wouldn't recommend any other. This pipe is designed for the powerband of the RB big blocks.

Bongi

I hear you, but sure the JP4 would be a good second choice?

Foxy

I don't know I never use generic pipes, only those intended for the engine. But then again, I used to race my nitros, so it was a factor for me that the JP pipes are illegal for sanctioned racing (not that I ever went to any sanctioned racing, as it turns out, they're normally allowed in club races, but still, I didn't like the idea that if I did want to go to a big race, I would have an illegal pipe).

I can't recommend enough buying the right racing pipe intended for the specific racing engine, always, not just in this case. I always use RB pipes with RB engines, OS pipes with OS engines, Novarossi pipes with Novarossi engines... you get the idea.

Bongi

Got it, going to buy the RB then.

Thanks for the advice

qaiz

@ foxy

But wasnt the JP 4 created to be legal.?

Something like IMFAR Legal (Sorry dont know what its called)

Foxy

You might be right, I haven't looked at it in detail, the last pipe I actually looked at from them was the JP3. Doesn't change my recommended pipe for that engine though. Thanks for pointing that out though...

qaiz

I completely agree with you on that one, Get a pipe thats made to run with the engine you're running.

I saw a guy at the track today, was running the OS Pipe I think 2026 or something like that with the K4.6 engine from the Savage.!!?

Wouldnt that be like not good, arent these pipes specifically made to deliever best preformance with a specific series of engines.?

Foxy

Well, it would certainly be a lot better than the stock plastic Savage pipe. As for the exact characteristics, I couldn't comment without seeing it run. If that's what his local hobby shop had, then I would probably have advised him to go for it myself. The K4.6 is not such a great engine to warrant a 'real' racing pipe anyway.

supertib

use the RB pipe if you want poor power and hard tuning............ EB Mods has dynoed the 928 and the RB pipe didnt look the greatest.... I am a person who has not bought into the RB hype...too little HP for the hype that surrounds them..

qaiz

From the looks of that graph.

Theres only a .02 increase in HP.

Would that really make a differience.

Sorry I have no idea, thats why im asking.

Foxy

Meh, I'm sorry but all the graphs in the world (even one which shows that the RB pipe develops the most torque ), will not convince me that the RB pipe is not the best pipe for an RB engine. Strike off the JP3, no good for racing, although nice torque curve. Strike off the Advantage, it's rubbish. What you're left with is a choice between considerably more torque in the midrange, or a tiny bit more hp in the high range. I know what I'll take.

supertib

Now check out how knarly a nice modded .21 can be..

revopqrs

i dont buy into the specific pipe idea either.... nice marketing. dont like the jp pies either. its about the type of pipe you need, ive always stuck to the 053 and 086 pipes depending on the track. but my favorite pipe for big mills is the tsais t-32, its worked awesome on every big motor ive tried it on. i was told the ninja 053 was the pipe to run on my ninja 28, it sucked compared to the t-32!! BIG TIME!
i adjust header length to fine tune the pipe. right now on my t-32 i have a werks med conical v header, i have long headers and short headers for tuning. im running a modded 528xr for thos who dont know.
every single person i talked into trying this pipe has loved it!! tibby hasnt tried one yet i dont think?
its nice and loud too, so you can hear your motor over the pack!! that makes a big difference to me... when running the 053 i couldnt hear my mill. its not an ugly sound either, just bigger!

http://tsais.com/products/exhaust/tu...oad/index.html

pur3evil

Wow. That's a big surprise to me! I've done some full scale dyno testing, and I know the dyno doesn't lie assuming all other factors are the same (ambient temp, humidity, barometric pressure, etc). So, I'm not arguing with the facts...

However, I've run the RB 2020 pipe on three different engines now (RB C6BB, Thunder Tiger Pro-21B-R, Sportwerks .26v2). This pipe is supposed to be very similar to the 2045, and while I've never dyno tested it, I've absolutely loved the way it's ran on all three engines. Never noticed any difficulty in tuning. I've also never seen a Sportwerks .26v2 run like mine with a JP3 on it, and there's several people running that combination at my track.

That Vspec is sick! Although it lacks a bit of bottom end torque compared to the 928, still looks like a monster! Looks very smooth as well... I wonder what a fully modded RB C6BB would look like in comparison. Maybe I should send mine in...

-Howard

supertib

I dont doupt the RB pipe works killer....... but before this dyno graph there was a rumour that no other pipe will even work on the 928....Apparently other pipes killed the powerband........ Well according to the dyno pretty much any pipe works decent on the 928, and other pipes do anything but kill the powerband....... sure the RB pipe has a good curve, but so do the other pipes as well....So to me the hype over the RB pipe is a little bit of a myth........ Ialso have a reason why I think the 928 is hard to tune, and it has nothing to do with pipe...... 2 hours with my files and i'd have that 928 tuning like a Mach 427......RB does some oddball stuff with his port timings that would make a motor very picky on tune..