Rotary Engine Rebuilders - RX8Club.com



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Old 05-03-2017, 07:43 PM   #1
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Rotary Engine Rebuilders

Many of us need rebuilds, and I've spent a good bit of time searching.
I can't seem to find a thread with a substantial number of reputable rebuilders, so I thought I would post the ones I've seen referenced on our forum.

Locations and reviews may help new members, and save time for the rest of us.

Feel free to add or update as needed.

In alphabetical order:

Indiana
Banzai Racing Home Page

Phoenix, AZ.
https://black-halo-racing.myshopify.com/

​​​​S.E. Michigan
http://www.chipsmotorsports.com/contact-us

Columbus, OH.
http://www.definedautoworks.com/

Rogue River, Ore.
http://www.drummondengines.com/

New Jersey
Services IRPerformance

Los Angeles
https://lucky7racing.net/

Signal Hill, CA.**
https://mazdatrix.com/index8.htm
A member reports Mazdatrix no longer does rebuilds.

Huntington Beach, CA
http://www.neptunespeed.com/

Edinburg, Tx.
OJ Imports

Palm Beach, Fla.
Pettit Racing
RX-7 & RX-8 Performance

Portland, Ore.
Pineapple Racing

Anaheim, CA.**
http://www.racingbeat.com/mazda/performance/about.html
** Racing Beat does not rebuild engines, but is a source for those who decide to DIY.

Neosho, MO.
(Southwest MO.)
http://m.therotarydoctor.net/?url=ht...%2enet%2f#2750

Garland, Tx.
https://rotaryperformance.com/

Knoxville, Tn.
Rotary Resurrection home of the budget rebuild.

Last edited by BigCajun; 05-25-2017 at 04:47 PM.
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Old 05-04-2017, 11:25 AM   #2
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I would suggest people search here and on rx7club.com for each of these before choosing. After 6 years of being boosted I am still thrilled with my Pineapple Racing build and the process was the best I could have wished for.

But, one and IMO the best, would be Darryl Drummond. He built the sealed Renesis engines used in the Star Mazda Formula Race Cars and a buddies Renesis from him made 268HP on the engine dyno.

Drummond Engines 541.761.5520

I would also put Pettit, Mazdatrix, and Racing beat on the list even though I decided against each of them based on the interactions I had with them.

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Old 05-04-2017, 11:32 AM   #3
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I will also add that people should educate themselves on what is important in engine building, and a lot of the attention to detail you see in piston engine builders does cross over to quality rotary builders. There is also a lot of misinformation regarding what makes power, and what doesn't. For example, the proven high HP drummond engines are not ported.
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Old 05-04-2017, 12:12 PM   #4
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Quote:
Originally Posted by 9krpmrx8 View Post
I would suggest people search here and on rx7club.com for each of these before choosing. After 6 years of being boosted I am still thrilled with my Pineapple Racing build and the process was the best I could have wished for.

But, one and IMO the best, would be Darryl Drummond. He built the sealed Renesis engines used in the Star Mazda Formula Race Cars and a buddies Renesis from him made 268HP on the engine dyno.

Drummond Engines 541.761.5520

I would also put Pettit, Mazdatrix, and Racing beat on the list even though I decided against each of them based on the interactions I had with them.
We have at least a dozen Star Mazdas kicking around at my home track. They are seriously fast. I want one. Badly.

Several of them have Drummond engines, and the owners rave about them. That puts Drummond high on my list for when my engine inevitably lets go. Drummond has limited bandwidth, however.

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Old 05-04-2017, 12:21 PM   #5
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I'd like to add Lucky7 Racing in Duarte, CA (Los Angeles metro area)
https://lucky7racing.net/

I did not realize Racing Beat did re-builds. They certainly don't advertise that anywhere.
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Old 05-04-2017, 12:32 PM   #6
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We have at least a dozen Star Mazdas kicking around at my home track. They are seriously fast. I want one. Badly.

Several of them have Drummond engines, and the owners rave about them. That puts Drummond high on my list for when my engine inevitably lets go. Drummond has limited bandwidth, however.
Those engines are quite unique in terms of their external accessories and such and I have built two, myself. It was a thrill to hear how my build performed on a grid populated by Drummond and Engman builds. For firsthand testimony, seek out PM Performance in AZ who manages a few teams using the decommissioned Start Series cars for club racing.

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Old 05-04-2017, 01:24 PM   #7
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Yeah those engines in those cars use a unique header, cable 70mm TB, and a Bosch race ECU IIRC. pretty impressive.
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Old 05-04-2017, 02:42 PM   #8
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Yeah those engines in those cars use a unique header, cable 70mm TB, and a Bosch race ECU IIRC. pretty impressive.
.... as well as dry-sump oiling, different pulleys, and some weird little o-rings (can't recall what they were but I needed to go get a bunch, LOL) for something. In any event, I built those engines the same way I build all the others, internally speaking, and they performed rather well. Been a while since I have seen them since then, though.
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Old 05-04-2017, 04:39 PM   #9
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I'd like to add Lucky7 Racing in Duarte, CA (Los Angeles metro area)
https://lucky7racing.net/
Done.
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Old 05-04-2017, 04:48 PM   #10
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I would also put Pettit, Mazdatrix, and Racing beat on the list even though I decided against each of them based on the interactions I had with them.
Done, although I didn't see rebuilding mentioned anywhere on Racing Beat's website.
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Old 05-04-2017, 04:53 PM   #11
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Well they are affiliated with Mazdatrix so maybe they handle all the rebuilds? It was a long time ago when I spoke to them. They were both really vague about what a rebuild of Renesis entailed and they did not recommend turbocharging it and generally spoke bad on the Renesis so I passed.
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Old 05-04-2017, 05:02 PM   #12
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Quote:
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Well they are affiliated with Mazdatrix so maybe they handle all the rebuilds? It was a long time ago when I spoke to them. They were both really vague about what a rebuild of Renesis entailed and they did not recommend turbocharging it and generally spoke bad on the Renesis so I passed.
They have rebuild kits, so it's useful info in case someone decides paying for a rebuild isn't in their budget and considers a DIY.
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Old 05-05-2017, 12:52 AM   #13
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Quote:
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Yeah those engines in those cars use a unique header, cable 70mm TB, and a Bosch race ECU IIRC. pretty impressive.


It was a MoTeC ecu, one of the best.
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Old 05-16-2017, 03:04 PM   #14
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Done, although I didn't see rebuilding mentioned anywhere on Racing Beat's website.
I don't think RB has done work on consumer cars in quite some time.
they mainly design and sell products at this point.
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Old 05-16-2017, 04:34 PM   #15
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BC: you should add
Huntington Beach, CA: NeptuneSpeed
NepTune SPEED - Home
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Old 05-16-2017, 04:58 PM   #16
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People who specialize in earlier rotary engines may not be the best choice for a Renesis. It has some of it's own unique peculiarities that require knowledge and experience on how to best address them.
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Old 05-16-2017, 05:23 PM   #17
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BC: you should add
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Done.
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Old 05-16-2017, 05:26 PM   #18
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People who specialize in earlier rotary engines may not be the best choice for a Renesis. It has some of it's own unique peculiarities that require knowledge and experience on how to best address them.
Thanks for your input.
I did see RX8s on their site.
I'm including them for informational purposes, and if anyone has any experiences or opinions about them, that's welcome also.
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Old 05-16-2017, 05:33 PM   #19
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People who specialize in earlier rotary engines may not be the best choice for a Renesis. It has some of it's own unique peculiarities that require knowledge and experience on how to best address them.
I have been saying that for years, with the curiosity as to why earlier rotary guys seem to not know what those detailed differences are despite Mazda's SAE papers on the matter and the obvious differences between 13Bs and Renesis'. Then again, I have never had to question builds by those whom are well-known and trusted in the RX-8 community.

Thank you for holding the same opinion welcome back, Sir.
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Old 05-16-2017, 05:34 PM   #20
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I often send people to Yoshi but does he build Renesis engines, now?
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Old 05-16-2017, 05:54 PM   #21
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Yeah but it's not often he does it.
Last time I was there he was rebuilding a motor and mentioned it's rare he does them because most 8 owners are on a limited budget (aka they're cheap skates) and just opt for a crate motor from Mazda since it's cheaper.
You know Yoshi though, he'll do whatever makes the customer happy.



side note: feels like just last week we were at his shop and you installed that clutch pedal. Still rock solid all these years later.
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Old 05-17-2017, 03:57 PM   #22
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Yeah but it's not often he does it.
Last time I was there he was rebuilding a motor and mentioned it's rare he does them because most 8 owners are on a limited budget (aka they're cheap skates) and just opt for a crate motor from Mazda since it's cheaper.
You know Yoshi though, he'll do whatever makes the customer happy.



side note: feels like just last week we were at his shop and you installed that clutch pedal. Still rock solid all these years later.
Yoshi's explanation is somewhat related to why I build so few; I prefer to build them all the same (blueprinted clearances, custom-cut side seals, etc.) even if I rarely build them anymore so as to keep the quality high. I am not sure that RX-8 owners are necessarily "cheap skates" as much as the entry level into the platform is now so low that the RX-8 is priced the same as a good rebuild. LOL

Yes, Yoshi is a super-nice guy who treated Phil and I better than we deserved at the time. :-)

Thx for the commentary on the clutch pedal. I have only had two warranty claims over the years since I first started offering the welded upgrade.
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Old 05-17-2017, 10:54 PM   #23
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Any Midwest shops for the list?
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Old 05-18-2017, 05:11 AM   #24
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Any Midwest shops for the list?
I'm not aware of any, hopefully there are some, but in nearly 5 years here I don't remember any talk of one.

One of the reasons for this thread is to get a list of all rebuilders so we can find the best choice for our individual members.
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Old 05-18-2017, 06:57 AM   #25
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I've been eyeing these guys for a while as they are not far from me DEFINED AUTOWORKS | Service Repair Upgrades | Performance for Mazda RX7 | RX-7 | RX8

Is there anyone that here that has used them in the past? Quality/service/warranty?
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