Toymods Car Club Inc: General Car Talk => MA70: 1UZ-FE afm / stock injectors dyno vid

Toymods Car Club
www.toymods.org.au

F.A.Q.

Home

Members

Toymods » General Car Talk » MA70: 1UZ-FE afm / stock injectors dyno vid Show: Today's Posts :: Show Polls Email to friend

Author

Topic

7M-Brisbane
Forums Junkie

Location:
Brisbane
Registered:
November 2002

Re: MA70: 1UZ-FE afm / stock injectors dyno vid	Thu, 29 July 2004 11:56

Hi Allan Being a bit of a closet 7M fan, I thought I might take a different approach and offer a few suggestions in a vaguely constructive manner. 1. Run good fuel. Otherwise you will blow a headgasket, spin some bearings, or crack a piston... all the while making limited power and probably making horrible rattling sounds too. Then you will add to the 7M's poor name and prove the naysayers right, when really the 7M is a great motor when set up right. No excuse is a good one - plan your journey. I know just about every petrol station in the general Brisbane area that sells better quality fuel... and I refuse to go anywhere else. Even in my 4M-powered daily driver I used to run at least a 95 octane premium and often the 98 octane stuff when I happened to stop at a servo that sold it. There have been one or two occasions when I've been desparate for fuel and put in a few dollars worth to get me to the next servo - in which case I will only put in a few dollars of good fuel, run it back down to empty again without flooring it once, and then fill it from there. Motors get a bad name from factory weaknesses, malplanned or poorly executed modifications, poor maintenance, and well-meaning but misinformed owners. Unfortunately your car appears to suffer from most of these and would probably perform a lot better in near-standard trim. 2. Before modifying a car, get it into tip-top condition and as close to original as possible, and establish a baseline. This way, you can track down any problems that may exist, and then work from there. 3. Run colder spark plugs if you are not already doing so. This is particularly important on engines running high boost, engines prone to detonation, or if for some ridiculous reason the owner insists on running 91 octane fuel. 4. The torque figures you are quoting are TRACTIVE EFFORT and are not an actual reflection of the motor's torque output. The original 7MGTE in my auto MA71 had what we estimate to be 270,000-300,000kms on it. I ran 13.71 @ 100.8mph at Willowbank with the following modifications: * second hand bleed valve, set to ~11psi: $25 * 3" mild steel exhaust: $930 So, for $955 I knocked almost two seconds off my quarter mile time (mid 15's when the car was standard - this was my baseline). After this motor, in astoundingly poor condition when we pulled it down, I fitted a "low km" import 7MGTE. I then fitted up the same exhaust, the same bleed valve, and at the same time a $107 K&N pod filter which I had fitted to the old motor after I ran the car at the drags. I fitted a manual box not long after, and then took it to the drags again. The manual box afforded slightly less traction, but I still ran a 13.71, this time at 103.7mph. This obviously gives a hint that this motor was healthier and that the manual box took a little less out of it in the top end. At no time did I have a fuel cut defender or ever run more boost than the factory management setup would allow. I know your ego will take a bashing, but return the thing as close to stock as you can... give it a good service with colder plugs, run some real fuel through it, and stick her on the dyno. I'm not really into dynos, but as this is your thing, establish a baseline this way. I can all but guarantee that you'll make almost exactly the same power as you are now. How do I know? Because a mate's Supra went on the dyno, with a mottled press-bent cat-back exhaust, an auto and 11psi.. and made 207rwhp. That, in kiddie language, is 153.33rwkW and near enough to spot on the figure you are making. From there, plan some modifications. [Report message to a moderator]

[Message index]

-=] Back to Top [=-

Current Time: Mon Jul 28 09:23:55 UTC 2025

Total time taken to generate the page: 0.0093538761138916 seconds

.:: Contact :: Home ::.