bob tatt
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| posted on 29/11/08 at 12:13 PM |
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top speed for a busa
very quick one running a 99 busa engine with a 3.62 lsd and 15 inch rims with 195 50 tyres what sort of top end should i expect its an indy with full
cage and aero screen if that makes any difference just thinking really as i cant work in the garage without risking frostbite
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afj
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| posted on 29/11/08 at 12:32 PM |
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nearly 130mph ish
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BenB
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| posted on 29/11/08 at 01:10 PM |
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Ultimately you'll hit a brick wall of aerodynamics with a Seven type car- they've got the aerodynamics of an elephant.....
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Gezza
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| posted on 29/11/08 at 03:27 PM |
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Hi all,with my busa and a 3.62 diff top speed with 195/50-15 was 115mph (true speed), now fitted 3.38 diff and get 110 in 5th gear with no noticable
loss of acceleration as the engine seems to use more of its torque, not tried flat out in 6th yet, dont think i prob ever will, 110-120 is plenty in
these type of cars.
gerry
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bob tatt
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| posted on 29/11/08 at 05:08 PM |
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thanks for the replies thats what i thought about the same as with the blade engine only ran out of revs at donnington so its not a big problem is it
poss to fit the lsd and bolt on shafts to a 3.38 and what models of sierra were they from so i can keep my eyes out diff will be worth more than the
car now i would of thought
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richard thomas
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| posted on 29/11/08 at 06:56 PM |
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Hit 120 on a wet sweeping right hand curve on the French motorway - head buffeting was enough to make me back off....mate's 911 was showing 130
though, he was well impressed! Didn't like to tell him his speedo is overreading.....
To be honest, it pulls through to 120 without any effect of aerodynamics to speak of - that said i have a flyscreen not a windscreen (or airbrake, as
it should be known as)
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Gezza
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| posted on 30/11/08 at 05:36 AM |
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Yes it is poss, i stripped a spare 3.62 and used the lsd with 3.38 crown wheel rebuilt and of you go. the 3.38 was from a diesel sierra.
hope that helps
gerry
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bob tatt
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| posted on 30/11/08 at 02:27 PM |
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will keep my eyes peeled for the smelly diesel sierra then wife will be happy when i buy that and strip it on the drive 
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Meeerrrk
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| posted on 2/12/08 at 06:07 PM |
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as said above, forget top speed, 110-120 is ENOUGH in a 7 type car!
For Sale : 2008 Aries/Stuart Taylor Motorsport Locoblade (954 Blade)
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sorens2
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| posted on 3/12/08 at 08:02 AM |
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quote:
Originally posted by Meeerrrk
as said above, forget top speed, 110-120 is ENOUGH in a 7 type car!
If you are running the car on Nürburgring you will do over 120 miles and thats where topspeed is nessasary.
And there is a difference on 120 or 135.
Søren S2
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Meeerrrk
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| posted on 3/12/08 at 11:37 PM |
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yes, but, we "generally" dont. most of us use them on the road
For Sale : 2008 Aries/Stuart Taylor Motorsport Locoblade (954 Blade)
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sorens2
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| posted on 4/12/08 at 07:00 AM |
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For a roadcar 120 would probably be enough.
Søren S2
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bob tatt
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| posted on 4/12/08 at 08:02 AM |
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its mainly a track car and i found with the blade engine i was on the limiter at donnington and at cadwell as well so maybe a change to a different
diff will be best my view on this is that if yourn using the busa with a lot more torque than most bike engines this will make it more tracktable out
of corners without the need to ring its neck and change up mid corner just my view of course and i will be doing the ring this year after securing a
five day pass from swmbo so the extra top end would come in handy there
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progers
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| posted on 4/12/08 at 08:38 AM |
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You need to gear a trackday car for around 130mph - especially with a Busa.
For a Busa the minumum is a 3.38 diff. Most racers use a 3.14 diff to get 135mph (yes a seven type car can do this speed down the straight at
Snetterton). A 3.14 is rare as hens teeth though.
Paul
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Jon Ison
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| posted on 4/12/08 at 07:47 PM |
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I have a 3.11 
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bob tatt
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| posted on 8/12/08 at 09:13 PM |
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guess who got real lucky today whilst weighing the scrap in a work. asked if he had any sierras in and he say just one round the back but its been
there for years not much good stuff left went had a look true there was not much left of the diesel estate. anyway poker face ensued ten mins with the
yard lad and a gas axe and out pops a 3.38 diff can anyone guess what i paid for it though ?
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Jon Ison
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| posted on 8/12/08 at 10:51 PM |
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Tenner, he didn't know what he had, you did though.........
Higher or lower ?
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iiyama
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| posted on 9/12/08 at 06:40 AM |
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I paid a tenner for the entire car, 2.3 DL estate!
If its broke, fix it. If it aint broke, take it apart and find out how it works!
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