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But Marcus also told me his car isn't running now (another reason he "can't" provide a dyno) so I don't know how sustainable those power levels are..
I hope we get good data to back it up and they really are as good as they are claimed to be. I'd rather be wrong than right honestly, big power twins in an FD is a very cool thing.
The Hitachi HT12s are supposed to be discontinued. Maybe some has a set or a few stashed.
It's a ton of money for random time slip and a "trust me matey" as the only available "data". If they were that good, people would share info. In general, people share data when it's impressive, and don't share info when they are embarrassed about spending money with crap results. There is no data available from Marcus either as the seller, just excuses as to why he has none.
I don't know if Hitachi even makes turbos at all anymore. They probably exited the business a while back.
rx72c was running the FD Motorsport twins on his personal car a couple years ago before they became unavailable and should have a dyno if you want to trawl through facebook - running a pulsar now?? I see Sasha was flogging a set of "refurbished" ones a few months back, which might amount to bead blasting, or maybe he still has some cores there if desperate?
From what I recall from other tuners, 270kw@1bar on petrol seems to be typical with these (Dyno Dynamics), with the SP covers installed. If you suffer from potential illegalities with a single, probably the best bolt-on option out there.......******* around with bored out side feeds nowadays though - yuk!
I don't know if Hitachi even makes turbos at all anymore. They probably exited the business a while back.
I haven't seen the 3KAI's listed for sale for at least 4-5 years, if not more. I am lucky mine are still in great shape. Raymond, you are probably right that Hitachi is out of the turbo business.
Mike
But Marcus also told me his car isn't running now (another reason he "can't" provide a dyno) so I don't know how sustainable those power levels are..
I hope we get good data to back it up and they really are as good as they are claimed to be. I'd rather be wrong than right honestly, big power twins in an FD is a very cool thing.
He has a fair few customers with them running ethanol around 25psi. Would be hard to argue worse life than overspeeding factory or KAI turbos on the small shafts. His personal car is an SP (so arguable leaving it on stands is an investment) and he usually has imported RZ Rx7s or GTRs to drive around if not driving the falcon.
Where is this "can't provide a dyno" coming from? He regularly shares dyno charts on Facebook.
faxtory form twins is really a niche thing for people who want period correct or very close engine bay or have class limitations, in that context stuff is generally expensive for marginal gains, given the price of new standard turbos it's to be expected. Again for most people I don't see the attraction, I'd rather use the logic control to use the secondary runner throttles vs rpm and run a split pulse single turbo.
This thread is a scam and waste of time just like the other one. No point in debating this endlessly unless someone actually has a video of a car running them on a dyno and/or track with time slip. There is a reason there is no data only snake oil claims. Would be happy to be proven wrong here, but this has gone on for years.
^Interesting feedback. Just to be clear, your direct interaction was w Sasha or Marcus?
Marcus
Originally Posted by Slides
He has a fair few customers with them running ethanol around 25psi. Would be hard to argue worse life than overspeeding factory or KAI turbos on the small shafts. His personal car is an SP (so arguable leaving it on stands is an investment) and he usually has imported RZ Rx7s or GTRs to drive around if not driving the falcon.
Where is this "can't provide a dyno" coming from? He regularly shares dyno charts on Facebook.
He would make more money advertising a product vs waiting for a car to age.
Look at the dynos on Facebook. They all lack data, weird scaling, no ft/lbs, screen shot is cut off etc. There is no clear standard format HPxFTLBS showing boost. Please show us a good clear dyno, I would like to be wrong. But a 45 minute conversation with Marcus directly lead to zero actual data, if he had any he would have shared it. Instead, he just showed me pictures of him in Japan. Maybe Japan has a Visa category for "exceptional aftermarket parts" that I somehow missed?
Originally Posted by TwinCharged RX7
This thread is a scam and waste of time just like the other one. No point in debating this endlessly unless someone actually has a video of a car running them on a dyno and/or track with time slip. There is a reason there is no data only snake oil claims. Would be happy to be proven wrong here, but this has gone on for years.
Yes, my point exactly.
(Show us the engine bay Squiggles, your V12 quad turbo e46 is a lie)
He has a fair few customers with them running ethanol around 25psi. Would be hard to argue worse life than overspeeding factory or KAI turbos on the small shafts. His personal car is an SP (so arguable leaving it on stands is an investment) and he usually has imported RZ Rx7s or GTRs to drive around if not driving the falcon.
Where is this "can't provide a dyno" coming from? He regularly shares dyno charts on Facebook.
faxtory form twins is really a niche thing for people who want period correct or very close engine bay or have class limitations, in that context stuff is generally expensive for marginal gains, given the price of new standard turbos it's to be expected. Again for most people I don't see the attraction, I'd rather use the logic control to use the secondary runner throttles vs rpm and run a split pulse single turbo.
I've seen the posts on Facebook but it looks like its been the same dyno/car for years. I'm not "nay saying" but I agree with the rest, it is suspicious. I am probably one of the few hopefuls for these twins as I am one of those you mentioned that is in that "niche" group of wanting to keep the nostalgic sequential twins and will be looking for replacements at some point. I am 100% sold on the Stock mount intercooler that both Sasha and Marcus sell and plan on grabbing one in the somewhat near future. I'm also 100% behind the vision both of those individuals like to push with a great performing sequential FD as that is my personal preference and I like the vision and product ideas they have. I just need more reassurance.
The facts are, we are at an age where it would be super simple to take a cell phone video of these cars running these setups at the dyno and post them. If they can do that and provide actual data, then they will have a new customer with me. But as others have said, that price is hard to swallow when I can grab a brand new set of 99 specs for half the price and meet my power goals. I would rather do something "beefier" that would probably last longer but its not worth that risk when I can buy two sets of brand new twins and stuff one in the closet until the other set dies in 20 years. Do you happen to know some of these other individuals that run these setups personally that you can ask if it is ok to give out their social media or something? That way possible future customers such as myself can be able to do more due diligence in researching the investment. I know I personally would be ok with somebody asking me about my experience with a product I am using, especially if it is in the rotary community. We honestly need more support in the Rotary community to continue to make parts for these cars such as JP3, SMB and RaceOnly. I would be happy to support them and keep them in business if they are making a product as well as they say.
I've seen the posts on Facebook but it looks like its been the same dyno/car for years. I'm not "nay saying" but I agree with the rest, it is suspicious. I am probably one of the few hopefuls for these twins as I am one of those you mentioned that is in that "niche" group of wanting to keep the nostalgic sequential twins and will be looking for replacements at some point. I am 100% sold on the Stock mount intercooler that both Sasha and Marcus sell and plan on grabbing one in the somewhat near future. I'm also 100% behind the vision both of those individuals like to push with a great performing sequential FD as that is my personal preference and I like the vision and product ideas they have. I just need more reassurance.
The facts are, we are at an age where it would be super simple to take a cell phone video of these cars running these setups at the dyno and post them. If they can do that and provide actual data, then they will have a new customer with me. But as others have said, that price is hard to swallow when I can grab a brand new set of 99 specs for half the price and meet my power goals. I would rather do something "beefier" that would probably last longer but its not worth that risk when I can buy two sets of brand new twins and stuff one in the closet until the other set dies in 20 years. Do you happen to know some of these other individuals that run these setups personally that you can ask if it is ok to give out their social media or something? That way possible future customers such as myself can be able to do more due diligence in researching the investment. I know I personally would be ok with somebody asking me about my experience with a product I am using, especially if it is in the rotary community. We honestly need more support in the Rotary community to continue to make parts for these cars such as JP3, SMB and RaceOnly. I would be happy to support them and keep them in business if they are making a product as well as they say.
I only lived in Sydney for a short time and was never really in the scene there, I'm sure if you messaged one of the owners he tags on Facebook they could give you feedback. I know the Rotormaster/Gas Motorsport workshop has had a good reputation for a long time (and some fast drag cars too), maybe flick them an email asking for a vit of feedback on tuning them?
I have actually purchased my set of twins from Marcus, as when I was replacing my twins BNR's were on backorder and Marcus actually had his set cheaper than a set of new 99's. I paid 3500 AUD in 8/21 for them, and they were a set of rebuilt twins. I wish I took more photos of them, but alas I was too excited to install them. There was some cracking on the wastegate port, but nothing atypical from stock twins. I am running a PFC, with basic bolt on mods, and have had the car tuned at Sakebomb garage in Fremont, CA. I got the autoexe intake, a ARC SMIC, catless downpipe, Bonez cat, and RB catback. I also have Rmagic ingition if that matters at all. Here is my dyno sheet, Sakebomb said I had an exhaust restriction, which may be true from the cat, but I am also limited by stock (but refreshed) fueling.
Honestly I don't think my tune is that good, but I am currently running ~14 psi. Will most likely get the car re-tuned down the road and can update once that happens.
Additionally, partially because these were rebuilt turbos, I believe these are pushing a non-zero amount of oil into my intake. Every time I take my intake elbow off for something I see a decent amount of oil.
I don't think there is much point with high flows (beyond not overspeeding factory turbos) with a factory fuel system. I have a significantly higher flowing pump fed from a surge tank and high flowed secondary injectors, from memory I have seen injector duty peak hold on the handset in the 90s duty cycle with Apexi intake, U type intercooler, some Japanese 3 inch down pipe and a 3.5inch catback just on series 8 turbos.
03-26-24, 12:57 PM
