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I was on the interstate the other night at about 2AM and got my 900 up to 100 miles an hour it was pulling about 5000 RPMs. What is the top speed of the turbo version and what are peoples experience getting to that.
 

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I was on the interstate the other night at about 2AM and got my 900 up to 100 miles an hour it was pulling about 5000 RPMs. What is the top speed of the turbo version and what are peoples experience getting to that.
Not condoning gross violation of the law at all by replying to this but a c900 is capable of hitting over 200kph stock type 7 or 8 primary sprockets are probably required to get much about 100mph.
 

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You get 100kph for 2,300rpm on Type 8s. So 220kph/136mph is possible at 5k.

It's generally advertised to have a 125mph top speed.
 

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I did 200kmh with my Type 6 just the other day, there was room left, I think it will max at around 225kmh (on GPS), with type 7 you can get to 235kmh (on GPS!) if you hug the revlimiter! (A friend of mine did that)

Boost is at 1 Bar straight (peaks a little higher and then controls back to 1 Bar) it goes very smooth to the 200kmh mark! Not bad for a 21 year old car. :D
 

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A good turbo with 7 or 8 primaries on a manual box should get around 130mph. I've seen an indicated 140 on mine on the German Autobahn. At 100mph it is still accelerating strongly.
 

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Suprised it's not more than that - my 4 speed 99T does 113 on tyres too small for it - that was with a gps data logger. Should be good for ~120 with normal tyres.
 

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Suprised it's not more than that - my 4 speed 99T does 113 on tyres too small for it - that was with a gps data logger. Should be good for ~120 with normal tyres.
You're probably right. Depends how long you want to keep your foot on the metal. At 140mph it was showing 5300 on the rev-counter, which sounds about right. So I suppose with enough road it could get to around 150 which is still shy of 6k rpm cutout. You've obviously got to have decent gas, at least 95 RON. I think poor fuel could knock 10-15 mph off this.

My vert on 6 primaries will still show over 120 easy, roof up or down.
 

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I seem to remember the number of 162mph being the rev cuttoff with type 8's. And I think with type 7's it comes out to about ~20mph less than that.
 

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I seem to remember the number of 162mph being the rev cuttoff with type 8's. And I think with type 7's it comes out to about ~20mph less than that.
That speed is with type 7s. Type 8 is higher.

The final drive ratios and speeds are thus and speed at 6k rpm if you could attain that;

no.5 primaries, 23mph/1000rpm, at 6k - 138mph
no.6 primaries, 25mph/1000rpm, at 6k - 150mph
no.7 primaries, 27mph/1000rpm, at 6k - 162mph
no.8 primaries, 29mph/1000rpm, at 6k - 174mph

Of course this is with a 5 speed manual. Auto will be less.

One of the biggest restriction on max speed is the tapering off of the boost by the APC at high rpm, and low octane fuel.
 

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I think I remember reading somewhere that the 'theoretical' top speed could not exceed 260km/h with type 8's.
I have real world experience in a number of 900's in the 200-205km/h range. My '82 turbo with US spec 85mp/h speedo was known to bury the needle for very long periods of time...
 

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I don't mind gross violations of the law unless I get caught. I only got caught once over 100 mph.
I know from experience that a new SPG will get to around 130-135 mph.
A new, standard, 1986 9000T would do 140 mph, later models are faster.
 

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The one thing I'll never get to have done is to drive one of these brand new. Must have been fun!
 

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The one thing I'll never get to have done is to drive one of these brand new. Must have been fun!
That was the fun part with both Jaguars and SAABs.
I drove the first Jaguar XJS in New England (1975) and it would go 140 smoothly and silently.
The first SPGs and 9000Ts had to tested too (so I told myself). I didn't have to buy the car or pay for gas or insurance. I had my driving fun on someone else's dime.
That's why I always drove ****boxes. Mechanics either have near-perfect cars or they prefer the cobbler's children approach. If you didn't mind the looks, you could drive a car for nearly nothing, saving the 2 good brake pads from 2 different jobs, we never paid for parts. If you had to, you could always run a fraudulent warranty claim to get the part you needed.
 

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"saving the 2 good brake pads from 2 different jobs..."

Glad to see I'm not the only one!
 

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That speed is with type 7s. Type 8 is higher.

The final drive ratios and speeds are thus and speed at 6k rpm if you could attain that;

no.5 primaries, 23mph/1000rpm, at 6k - 138mph
no.6 primaries, 25mph/1000rpm, at 6k - 150mph
no.7 primaries, 27mph/1000rpm, at 6k - 162mph
no.8 primaries, 29mph/1000rpm, at 6k - 174mph

Of course this is with a 5 speed manual. Auto will be less.

One of the biggest restriction on max speed is the tapering off of the boost by the APC at high rpm, and low octane fuel.
Is this with the long Diff (Early years) or the short Diff? (Late 80's till end)

280.03 km/h (174mph) with a 900 classic is faaaaast! :eek:
 

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Is this with the long Diff (Early years) or the short Diff? (Late 80's till end)

280.03 km/h (174mph) with a 900 classic is faaaaast! :eek:
I don't have that information and it's irrelevant, but I'm reasonable sure it's the late diff. The clue is in the mph/1000rpm figure.
Please remember that you need the power to get to 6000rpm in 5th gear.
 

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I did a test a while back on my '85T16, but this was when everything was stock and it hasn't yet undergone a turbo or engine rebuild, and on my old gearbox with type 6's. I managed to reach 180km/hr (112.5mph) max, and couldn't get it to go any faster; I couldn't get anymore power out of it. Last time I tried, after some light mods (not to the degree I've got now, but I think at least the 3" exhaust and FMIC), I was able to reach 235km/hr (146.9mph). This was on old H-rated tires, so I didn't want to go any faster, but boost was still going strong at this RPM; I'm very certain it would have easily screamed past 245km/hr. I've since upgraded my turbo, rebuilt my engine, tweaked the electronics, and have a tranny with type 7's, so perhaps I will give it another shot one of these days.

li Arc
 

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Make sure about your speedometers too, mine is a little optimistic (about 10%!) and at high speeds it becomes very significant.

As for revs, at 100 mph I am always doing more like 4000 RPM and not 5000, and really, power is more important than revs.
 
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