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7M-Brisbane
Forums Junkie

Location:
Brisbane
Registered:
November 2002

Re: MA70: 1UZ-FE afm / stock injectors dyno vid

Mon, 02 August 2004 15:28

I could probably go and find a hundred pictures of blown up 7M's if you want... there would be more but people probably get sick of taking photos. By the same token there are probably an irregular proportion of photos of blown JZ motors.. because people that blow them are either surprised their motor blew and want to show people or are 7M warriors and want to show people.

But, you are both right in a way.

* If you push hard enough, run into a problem, or tune badly, you can blow up any engine. In fact any engine could blow up at any time for none of the above reasons. A rare failure on a standard motor or pushing the envelope does not mean, will not mean, and should not even be cause to suggest that the 7M is a better or even equally good engine.

* In factory form the 7M is arguably the most unreliable engine ever released. This does not mean that you can not build a good one.

Stop your arguing, both go and make some real modifications, and I'll see you each back here in 12 months for ROUND TWO.

Prove each other wrong the FUN way Smile

Quote:

i just find it very hard to believe theres 600kw there on a motor the head hasnt even been pulled off! So hes using stock pistons, valves, springs and the lot ay?

Oh and Blake... no need to be so closed minded mate. I know you like your V8's and stuff, but you seem to have this same argument with people over and over. This has been proven many times and it's old news.

A friend has a 1993 model JZA80 with the factory 2JZGTE in it. That's right, it's over 10 years old. He doesn't like quoting power figures, but for the purposes of illustration I can vouch that he has cracked the 400rwkW mark. The motor has never been out of the car and there has also never been any need to knock the head off it. The only internal change has been the inclusion of aftermarket cams and the addition of a shitload of boost.

When worked out on a generic 15% drivetrain loss to get 400rwkW, that comes out to around 640hp at the flywheel on a motor that is over 10 years old and has never been subject to any modifications for strengthening, longevity, oiling, or anything like that.

Without cursing him, and touch wood, this car has been putting out big power for quite a while now, is driven on long cruises and does regular around town & highway work. It has also been to the drags a few times, done a bit of circuit work, and if I remember we even ended up interstate (or certainly close to it) once when we were on a cruise. Even before it was making this kind of power it was putting out about 350-400 crank hp on the factory twin turbo setup without missing a beat.

The biggest problem I remember is a blown turbo gasket (cost about 10 bucks and took us an hour or two to change), and even that was only due to human error with the machining of the flange leaving a ridge on it (dodgily fixed late at night with a metal file and sandpaper)!

[Updated on: Mon, 02 August 2004 16:02]

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