Originally Posted by dillsrotary

i wouldn't be scared of compression ratio, high comp doesn't equal 'not boostable', the s2000 is at 11:1 and has been cleanly boosted.

Originally Posted by Ike

Sure you can add FI, but neither the S2K nor RX-8 respond all that well to it.

Originally Posted by dillsrotary

i wouldn't be scared of compression ratio, high comp doesn't equal 'not boostable', the s2000 is at 11:1 and has been cleanly boosted.

Originally Posted by Red Devil

That's interesting, I thought ~8psi and a bit above 300whp on a car that is providing ~180whp NA is a great return.

Originally Posted by AdRoCK3217

As true as this is, the RX8, in my mind, will never have the same mod-ability as the FD. The compression is far too high - 10.0:1 + boost = I would NEVER feel comfortable making much power. No matter who the tuner is, I don't think I'd ever be comfortable really hammering on it like I can while N/A.

The RX8 also lacks peripheral exhaust ports...which is just not as efficient for a tubocharged car. Much less direct-flow..slower spool..etc..

Originally Posted by WhiteDealershipRice

I was easily able to put 2 suitcases (rollable, carry on type), a backpack, a briefcase, a portable crib and a umbrella stroller in the trunk (boot).
The only things we took with us on the passenger compartment were a small cooler for the baby's formula, and my 4 year old's special "Blankie" (and a couple of toys for them)

I don't have the optional spare tire though

Originally Posted by rotarygod

I hate to say it but as gorgeous as the FD is, it's not a reliable car by anyone's standards. It is inherently flawed and very few of them have ever made 100,000 miles. Not even stock. The small twin turbos were very complex. With over 70 vacuum lines and numerous actuators to make them work properly, it didn't take much to cause that system to not transition smoothly. The vacuum lines are all rubber as most cars are and they get brittle and break, crack, etc... The engine bay of the 3rd gen is very hot and this happens fairly quickly. Let me quantify that by saying it may still take several years but they still get brittle before they would in other cars.

The small twins spin very fast. On prespool of the 2nd turbo, it can momentarily hit 150,000 rpm. The bearings on those go out fairly quicky. I've seen them gone in as little as 30,000 miles but mearly all with a very rare few ever making 50,000+ before needing to be rebuilt.

The engine coolant seals were changed from the 2nd gens. They proved to be unreliable. Mazda later added a small metal heat shield to their rebuilt engines and their over the counter seal sales. The seals would fail and water would leak. This was a huge problem with these cars as the miles go up and most of them will suffer this fate at some point usually well under 100,000 miles.

Those cars has inadequate cooling ability. They'd overheat in traffic in warmer climates. There is just no excuse for that! People that tracked them would really have issues unless this was worked out.

If you want a reliable FD, rebuild the engine with different coolant seals, dump the stock twin turbos and complete replace the coolant system with a better one. Until this is done, that is one of the least reliable cars you can own in the longterm.

Originally Posted by Ike

Sure you can add FI, but neither the S2K nor RX-8 respond all that well to it.

Originally Posted by rotary crazy

what is it going to take? a 600 whp renesis?

people are getting 400+ whp from the renesis, I can asure you to get more than that in a 13b-REW you have to spend a lot of $$$$$.

Originally Posted by cavemancan

VERY GOOD POINT

(Dont know the answer) Are there any Rx7 engines that are turbo'd hitting 400wHP with no internal modification? Internal mods do not include fuel system and ignition system. I mean apex seals, porting, etc. :Freak_ani

Originally Posted by rotary crazy

He did say JDM, the jdm fd is very diferent than the US version, it has less than half the vacuum lines, the cooling sistem was improve, the turbos are diferent ( 1999+) it has almost no emisions equipment, etc.The jdm FD's that are rolling around here are very trouble free.

Originally Posted by cavemancan

(Dont know the answer) Are there any Rx7 engines that are turbo'd hitting 400wHP with no internal modification? Internal mods do not include fuel system and ignition system. I mean apex seals, porting, etc. :Freak_ani

Originally Posted by rotarygod

That's a good point. I have no experience with the newer Jspec cars so I can only hope that they improved it over the years.

Originally Posted by rotarygod

Back in 2000-2001, Ari at Rotary Performance was really heavy into drag racing his FD. I'm not sure if he still is or not. He ran around for over a year on a stock Mazda remanufactured engine. No internal work, all stock seals, no porting, nothing. He boosted it with a Greddy T76 up to 26 psi and ran a 75 shot of nitrous. He had an upgraded fuel system, stock intake manifold, and a Haltech ecu. Good tuning got him 620 rwhp and he ran it an entire season without blowing it up. That setup got him into the 9's with a stock transmission!

Originally Posted by rotarygod

LMFAO!!! I'm not too sure about the S2000 but the RX-8 comment is downright laughable!

Originally Posted by Ike

Yeah, because the results have been so impressive thus far... :boring:

Originally Posted by rotarygod

Back in 2000-2001, Ari at Rotary Performance was really heavy into drag racing his FD. I'm not sure if he still is or not. He ran around for over a year on a stock Mazda remanufactured engine. No internal work, all stock seals, no porting, nothing. He boosted it with a Greddy T76 up to 26 psi and ran a 75 shot of nitrous. He had an upgraded fuel system, stock intake manifold, and a Haltech ecu. Good tuning got him 620 rwhp and he ran it an entire season without blowing it up. That setup got him into the 9's with a stock transmission!

Originally Posted by Red Devil

What results impress you :Wconfused At the given pressure ratios the Renesis is performing as would be expected.

Originally Posted by rotarygod

I haven't seen any 13B do what Scott has made a Renesis do at the same boost levels. I'm not too sure why that's not impressive? Power numbers are still going up and will continue to do so. I guess we need to give it about 285 hp or so at 19 psi for it to be impressive. :rolleyes: