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MK Indy Diff Ratio
IWantOne - 22/9/05 at 03:08 PM

Please help me!!!! i know you have had a lot of questions on this but i am getting lost. i have an MK Indy with the Blackbird motor. I am using the car on the road, no track days or hill climbing...yet. i would like to be able to cruise at 80...ish. at the minute i am getting passed by milk floats and i am on 6k revs! where can i find a calculator for the above combination.


many thanks in advance.


Ady

Mr G - 22/9/05 at 03:15 PM

QUAIFE CALC

IWantOne - 22/9/05 at 03:19 PM

thanks for that. i cant find the Blackbird motor in the list...any ideas???

sorry to be a pain!!

Guinness - 22/9/05 at 03:21 PM

About half way down this topic, Gear Calc

Link

You pick your engine, diff and tyre size and it works out top speed in each gear. If you want to see how fast you are at 6000 rpm, then adjust the rev limit on the options on the data sheet.

HTH Mike

IWantOne - 22/9/05 at 03:23 PM

thanks mike. got the spreed sheet will have a look when i get home...best not try and run it on works server!!!!!!!!!!!!!

mookaloid - 22/9/05 at 03:35 PM

Should have a car with a proper car engine

donut - 22/9/05 at 03:37 PM

I'll second that!!

IWantOne - 22/9/05 at 03:47 PM

i got one of them for every day...but wanted a proper car!!!!

oopsss....dont want to upsaet anyone as im new and need all the help i can get!!!!!!

alister667 - 22/9/05 at 08:28 PM

Don't listen to them boat anchor boys, they don't know what they're on about.
Besides all they'll see of your car is the back of it as it disappears into the distance

mookaloid - 22/9/05 at 09:27 PM

At least my 'boat anchor' car keeps going past 125 mph

IWantOne - 23/9/05 at 10:12 AM

oh god.....ive started an argument!!!!!! its on MK Indy thats all that matters...???

iank - 23/9/05 at 10:37 AM

quote:
Originally posted by IWantOne
oh god.....ive started an argument!!!!!! its on MK Indy thats all that matters...???


Nah, it's just the friendly banter between the BEC and CEC camps, no one gets hurt. and to be honest they're both right.

BTW 6000 rpm on a BEC, isn't that the equivalent of idle on a CEC, not suprised you aren't going anywhere fast redline is up in the 10k's isn't it?

Now if you want an argument start a 'which size wheels are best' thread

IWantOne - 23/9/05 at 10:58 AM

ok brace yourself...........i have 15" wheels but looking at going to 17"....am i doing the right thing???...........ok im ready to duck...

Hellfire - 23/9/05 at 11:57 AM

Yep, 17" wheels definitely look the best.

I wouldn't be too concerned about the top speed. Its not how fast it goes but how fast it gets there...................

[Edited on 23-9-05 by Hellfire]

IWantOne - 23/9/05 at 03:38 PM

thanks...will have a look for some 17's. just had a quote for a recon 3.36 diif £400. is that about right?

Hellfire - 23/9/05 at 05:16 PM

Do you mean 3.38? Does it have limited slip internals?

IWantOne - 24/9/05 at 08:32 AM

sorry...3.38...i believe its just a standard diff...the guy didnt say otherwise!!

Hellfire - 24/9/05 at 04:48 PM

If its just a standard open diff, I'd say it was expensive. If it has limited slip built in, I'd say it was reasonable.

You can buy a complete car with 3.38 diff for less than £100. Strip it, flog what bits you don't need and scrap the rest. (If you have the space and the inclination)

phelpsa - 24/9/05 at 05:10 PM

15" wheels are definately better, especially on a BEC where the whole idea is less weight!

Mookaloid, you're just jealous

[Edited on 24-9-05 by phelpsa]

mookaloid - 25/9/05 at 08:20 AM

Jealous? me? never

It seems to me that us CEC users are looked down on by a lot of you BEC users, however I take great pleasure in using a 30 year old (boat anchor) engine and making it go fast.

I think that bike engines are far too common nowadays, and I like to be different

So to you young Adam