Top Speed

[Projectmk3]

from what ive heard, you spedo isnt accurate after 100mph or something like that...mines never accurate cause i have aftermarket gages on my 88 and it tell me i can go up 2 160 <(laughs)

 

[Nick M]

The speedo in the US is only required to be within 7%, plus or minus. And they are built optimitic, to slow you down. So if it is 5% fast, 5% of 60 mph is not nearly as much of an error as 5% of 125mph.

 

[7MA61]

Elevation? Tune/age? A proper 7MGE W58 Supra will do 130, but not much more. 150 is impossible without a gearing change, and then more power.

164mph is possible with a 3.9:1 rear end and a W58. (limiter at 7000rpm), stock 7mge limiter is 6900rpm or mine was when I had a stock ecu.:icon_bigg

So 160mph isn't out of the question assuming a very long down hill road

 

[ValgeKotkas]

6550 was the stock limiter IIRC

 

[7MA61]

6550 was the stock limiter IIRC

Not on mine used to crack 106-108kmph in second, now does 111kmph with the 7000rpm limit.

That was a manual MA70 ecu.

 

[ATL88Supra]

i got to 130 last night (GPS tested) but i was at 5500 rpm and it was a auto

 

[ValgeKotkas]

Not on mine used to crack 106-108kmph in second, now does 111kmph with the 7000rpm limit.

That was a manual MA70 ecu.

I think your car was once stock too But not anymore, when you thought it was:icon_razz

 

[Nick M]

164mph is possible with a 3.9:1 rear end and a W58. (limiter at 7000rpm), stock 7mge limiter is 6900rpm or mine was when I had a stock ecu.:icon_bigg

So 160mph isn't out of the question assuming a very long down hill road

Like I said, with out a gearing change. And dream on if you think a 7MGE in an MA70 model is going to do 160 mph with any gear set.

I did the math once before. 6750 fuel cut is about 142 with a W58 and stock 4.30 gear. I think.

 

[OfnaRcR4]

I did 130 at 6000

 

[Nick M]

That sounds about right. Damn close in fact. Push it to fuel cut(yeah right) and you hit 140.

 

[suprabad]

80mph...so going any faster than that is pointless in my eyes.

I am pointless in your eyes.

 

[f00g00]

I go flat out in mine a few times a week and I can barely get it past 5000 rpm in 5th. Ive got a run of about 5K to the base where I work after I go through a secure monitered area and I agree that the NA doesn't have enough balls. Ive had mine for about 10 years, been through 3 motors 2 transmissions and one LSD(which turned out to not be bad after all).
Ive only modified intake and exhaust which helped a little.

 

[AGlobalThreat]

Like I said, with out a gearing change. And dream on if you think a 7MGE in an MA70 model is going to do 160 mph with any gear set.

I did the math once before. 6750 fuel cut is about 142 with a W58 and stock 4.30 gear. I think.

The top speed with a redline of 6500, 4.30 gearing, W58, and stock size wheels and tires is 152.8 mph. Jeff Gore did the math for me a while back.

 

[Nick M]

Wrong.


edit; http://www.supramania.com/forums/attachment.php?attachmentid=11975&d=1165383185

As I think about it, you could simply have forgotten it was a 4, and not a 5. It was 142, not 152. He has 143 on the chart, but that comes down to rounding.