MKIV - More Speculation, More Confirmation - Page 2 - MR2 Owners Club Message Board
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post #21 of 24 (permalink) Old November 27th, 2012, 14:05
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Originally Posted by DarkMousy
What does the ISF v8 weigh?

MWR is making 320 whp NA on a 2gr with I/H/E and mild cams/valve springs and revving up to 7500+ rpm. I'd imagine 400whp should be attainable with a bore/aggressive cams/head work/better throttle body if fuel and oiling are addressed.

That being said, the range topper should be FI, preferably turbocharged. I hope they'd leave the ECU a bit less difficult than the current ones.
I remember one of the car mags while comparing the ISF to the Audi S4 and the M3 saying that the ISF engine was bigger and heavier than the others. It would just seem to me that it would take a lot of work to the V8 to make it worth going that route. 400hp just wouldn't cut it for the upper model. I would also imagine that if the went gr it would be the one from the IS 350 and not the fwd model. It already makes something like 25-30 more hp than the fwd models. If Nissan can 350hp with a VQ37 in the NISMO Z than this power range or more should be no problem with a more modern GR with direct injection. Is MWR's 320 hp whp or crank? We need to remember that the current GRs are models designed for mini vans and luxury/family cars. There is a lot done to keep them very quite and smooth. If Toyota wanted to do it right, these engines would receive more aggressive intakes, exhaust, cams, etc. If you take the IS350's engine at I think 304 hp and 3.5 liters and punched it to 3.7 going by the same hp/liter power would jump to around 322. If you figure it is also pretty choked off to keep it quiet then even more. Factor in more aggressive cams and some head work and tuning you can see how the power would rise quickly. I agree that turbo charging would be the way to go in a higher level model.
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post #22 of 24 (permalink) Old November 27th, 2012, 19:20
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There was another thread in the v6 forum where someone mentioned a company that built GR race engines (I want to say Merlin) and they stated that DI didn't add significant power once other issues were addressed or something along those lines.

The MWR car is at the wheels - standard 2GR swapped cars already make in the 290 range at the wheels which should translate to roughly 320-330 at the crank.
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post #23 of 24 (permalink) Old December 2nd, 2012, 14:29
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Direct injection should allow a higher compression ratio as well as a more aggressive tune on the ignition side of things. Regardless, if they do a rwd sports car, the direct injected motor is what they'd use.
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post #24 of 24 (permalink) Old December 12th, 2012, 08:35
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Originally Posted by JDM SNUKUMZ
Its been known that these cars were beyond there times. Hell both the supra and rx7 were released same year carrying both hefty price tags. Supra at 40.5 and rx7 in the high 30. Lot of money for that current year.
FWIW....My '93 FD R1 that I bought in '96 left the dealers lot for high 20's from the originial owner. That's what the owner paid for it and there were quite a few people that paid very high 20's very low 30's for that car. There were also a few people that paid $40k for the same car because of dealers not budging from the MSRP.

Originally Posted by Darkmousy
I'm actually well aware of the quality/standard of the 90's Japanese "super cars", what would lead you to assume that I'm not aware of it? What does my age have to do with my supposed ignorance concerning the matter? The internet is a great resource for learning and more information about said cars is available at my fingertips than what was likely available to the layman in the 90's when those cars were current.
He wasn't calling you ignornant just saying that it is alittle different when you were living there then when you see it on the net in todays dates. Also FWIW, the first thing I ever typed in the web address box was in 1994. So from what I gather about the FD in '96 from the internet was the price was all over the board. Googling RX-7 now adays brings up page after page of engine failures and LSx swaps. Had I know what the internet knows now about the FD I never would have bought that POS. lol.

Last edited by SuperMR2; December 12th, 2012 at 12:11.
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