Anybody care to offer info or input on a 20b single turbo....thinking about a To4. Want about 420-450 whp @ 8lbs. Thanks

HKS T51R SPL https://www.nopistons.com/forums/pub...IR#>/bigok.gif

I would say that a t04 would be to small for a 20 unless you try a T04S or Z.. Make the choice of what type off driving you plan on doing more and consider the RPM range you want the power to come in at.

I am also interested in what others have done with a 20B. I am currently looking to place an ex-Camaron Worth Bonzat TT 20B into my vintage IMSA GTO car (the Corona Lite car) and am going to have a hell of a time getting the intake system under the hood! Since I am looking for an endurance racing set up, not a drag racing set up, I won't be looking for MAX HP. Should I stay with the TT, or is a single turbo workable?



I also have a Mandeville built 20B short block as a spare back up, so I'm willing to push the envelope somewhat https://www.nopistons.com/forums/pub...1047683358.gif



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Nice project Mr. G Who built the chasis on the GTO? Know who drove it when it was new and years? Should have fun with it.

that car looks pretty nice. should look awesome when finished. any leads on teh healight kit?lol

looks like a nice first gen in the corner too....

The car was built by Joe Carr in Petaluma originally for the Trans-Am series in 1988, but they wouldn't allow Rotory power so the car was then made legal for IMSA GTU. Originally sponsored by Corona, the twin cars raced at portland, Del Mar and Kansas in 1989, then many IMSA events in 1990 and 91. In 1992 the original owner (John Daly of San Diego), sold them to Gary Biehl (current crew chief for an ALMS Porsche Team). They ran a few more events in 93 and 94. My car was then sold to Ralph Thomas of North Carolina who campaigned her at Sebring and Daytona until 1996. Several well known Mazda drivers were part of those teams. Car never placed well. In 1997 the car was retired. I bought her last year out of Roger Mandevilles shop with a new 20b short block installed.

At Sebring in 1990 [attachment=30478:attachment]







Here is another car of mine



and another

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My NASCAR 1st Gen Video

What are your goals power level wise? You can spool a pretty decent sized turbo easily with a 20B. I would run a GT42R or something similar I can get a good sized undivided T6 turbine housing for it if interested. Should run nice and make good power easily. I would definitely drop the twins.

T6? What the **** does that look like compared to a t4?

Cool history on the Mazda. Did Lance Stewart drive it in the early 90's? It is starting to look familiar but the Corona livery does not come to mind. I have a guy J.R. at Just Racing putting my 1993 20b single turbo together. He's been doing Mazdas forever but has always shied away from publicity. It's going to get me out on autox (at least) and my 14 and 11 yo sons MIGHT get to drive it if they act right when they are old enough. Maybe some track time will follow..probably have to track it once my license is gone!!! Hoping for 500rwp @ 10 pounds and run it on the spring for the street. I'll post some pics soon.

[quote name='93 R1' date='Apr 28 2005, 08:06 PM']T6? What the **** does that look like compared to a t4?


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its more bigger.



I agree with sean, get a big turbo on there. More power at less boost would be optimal, and with the 20b you can spool some big turbos.

Thanks for the input. I'm a novice at the Turbo thing so I've got some schoolin' to do1

I want to auto x and need power on the low/mid range...... don't want to wait for turbo.....however I don't want the turbo to run out on the topside. Any idea where the best compromise would be? I don't PLAN to ever run more than 10 pounds and think 6 to 8 for autox is all i'll need.

[quote name='93 R1' date='Apr 28 2005, 09:06 PM']T6? What the **** does that look like compared to a t4?


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[quote name='rfreeman27' date='Apr 28 2005, 11:08 PM']its more bigger.



I agree with sean, get a big turbo on there. More power at less boost would be optimal, and with the 20b you can spool some big turbos.


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No ****...come on now man. I just want to see how much bigger it really is.

[quote name='93 R1' date='Apr 29 2005, 06:28 AM']No ****...come on now man. I just want to see how much bigger it really is.


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Take a divided T4 and make each hole a T3 and you are pretty damn close. On the three rotor you would be happier running undivided, something like this.

Here better comparison for you.

[quote name='Midnightdriver' date='Apr 28 2005, 01:14 PM']I would say that a t04 would be to small for a 20 unless you try a T04S or Z.. Make the choice of what type off driving you plan on doing more and consider the RPM range you want the power to come in at.


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LOL....I hope you mean TWO T04S/Z's for a 20B.

[quote name='bpmfla' date='Apr 29 2005, 07:24 AM']I want to auto x and need power on the low/mid range...... don't want to wait for turbo.....however I don't want the turbo to run out on the topside. Any idea where the best compromise would be? I don't PLAN to ever run more than 10 pounds and think 6 to 8 for autox is all i'll need.


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Then why are you putting a 20b in the car?



way too much work for what you want to do! get a t04e kit, you will make good power down low, and still have a balanced car...



(on a 13b that is)

[quote name='Zero R' date='Apr 29 2005, 02:12 PM']Here better comparison for you.


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thanks

Because I want a 20b and my engine is junk. Also, JR is tired of building the sos and gets this devious grin on his face when we talk about it. 500 whp for the street is cool as **** and I'll detune for autox. My racing days are basically over but I would track the car for "sportscar" events and post videos of the beast eating expensive itialian and racebreed stuff. And blowing the doors off others on the street should be fun as well. I'd like to see the look on the Viper and z6 drivers faces in my rearview. Got a neighbor with a GT3 and a Lambo with the 4wd...like to see how the 20b stacks up. I think he'll have a bit more invested than me!!!!

do you mean Z06 as in corvettes?

^^^ Good to see two other Florida Rotary guys on the forum, what part are you guys from? bpm theres so many guys with exotics down here in fl, i would love to see some vids when you get that 20b.

stuart fl and yes corvettes...cobras......competetion pintos whatever.....let them experience rotor power

[quote name='little rotary 14' date='Apr 30 2005, 06:34 PM']stuart fl and yes corvettes...cobras......competetion pintos whatever.....let them experience rotor power


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here are some "competition Pintos" eating bone stock 12a dust!





Irwindale Speedway...25 Pintos, one BMW and a1979 RX-7



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T66-1 ceramic ballbearing. Good for about 24psi.

[quote name='cosmo105' date='May 1 2005, 01:04 AM']T66-1 ceramic ballbearing. Good for about 24psi.


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Personal experience? How is it as a road car... i.e. lag time, boost spikes etc? Any durability issues?

Thanks.



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There is alot of neat cars around here....track events at Moroso,Sebring and Daytona happen all the time. I've been at events with the Palm Beach Sportscar club at Moroso where our Firehawk MX-6 was turning better times than the F 40s!!! I think having the extra300 plus HP in my RX7 will make it even easier to pass them............cool video to see a F 50 passed or some kind of a Lambo!

I would also reccomend the GT42. If you compare compressor maps they can move a lot more air at lower boost than old T-series turbos.