Will a V4 engine e.g. from a pan european fit into a locost? there seems to be plenty about, they're cheapish and with high torque / tall gears seam more suitable for use with a car diff.

and Stuart Taylor have installed a few.

As you say, pretty good engine, it is a bit tall, and a bit down on max power compared to R1s, Blades, etc.

Sounds nice too.

Adam.

I heard someone say (it may have been Ian at ST) that the Pan Euro is a good alternative for when the X Flow blows up. By that I took it to mean that its not really like a BEC to drive but is a nice n cheap 100bhp lump

How's about a Yamaha Vmax motor instead? Full power models have 140bhp and gobs or torque

The output shaft turns the wrong way for most diffs I seem to recall

How about a Rocket III motor. Could easily be tuned to give over 200hp and loads of torque.

Isnt that kinda defeating the object of a BEC though, a 2.3L engine that probably weighs as much as a Pinto!

PMSL your not wrong Chris!

Can officially confirm that the V-max motor goes the wrong way for a standard sierra diff.

Mate of mine has one installed in a Front Wheel drive 3 wheeler

approx weight of 300kg inc driver and 145Bhp

480Bhp/tonne! new pants please!

inn reality all it does is spin the wheels and andersteer , a fliping good laugh otherwise.

I looked up the weight of a Rocket III for a laugh, 350kgs!! I bet the engine is best part of 200kgs of that.

If it turns the wrong way for the diff, surely you can just turn the diff over?

I'll never forget watching a lad who'd turned over the rear beam on his Mk2 Escort to make it into a "hotrod" try it out for the first time.

Backwards.
It went backwards.
(oh how we laughed)



N

If you turn a diff over though, it doesnt run on the correct face of the gears, all the forces go through what should be the back face of the teeth.
You wouldnt want to run it through a reverse box either, in forward mode they run straight through and the input / output are effectively locked together, but in reverse mode the power will go through gears / chains etc to reverse the output. A reverse box running like this all the time wouldnt last very long!

[Edited on 1/2/05 by ChrisGamlin]

adampage

what diff and wheel / tyre combination do you use with the ST1100 ?

I have just looked up the gear ratios on the net and unless you have a low ratio diff and big wheels then your top speed is quite low, or have I got it wrong somewhere?

quote:

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A reverse box running like this all the time wouldnt last very long!

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Interesting point.... but:

Past experience* dictates that the profile of teeth is identical no matter which side you are looking at. Therefore the efficiency/accuracy of the meshing between teeth should be indentical whichever orientation you place the diff in. Infact, you'd be using as-yet unused and fresh sides to the teeth: just as new.

BUT, (I love that word), as the teeh are helically cut, a change of orientation would produce a different resultant force on the input gear's bearings. (Pulling towards the diff, and not pushing away as it usually would).
To the best of my knowledge, most diffs use a pair of conical bearings to seat the input shaft, so that's not going be an issue either.

The breather..... now there's a problem. (plug it, and drill'n tap another on t'other side)

(just my 2 kronor's worth)

N

Edit: forgot to say.. *past experience* = 2 years designing gearboxes/drive-axles and associated manufacturing/assembling tools/techniques for JCB Transmissions Ltd in Wrexham, Wales.

[Edited on 1/2/05 by nick baker]

Doesn't everyone complain about honda vtec engines going backwards?
You need to find the diff off an s2000.....

I think the S2000 turns the "right" way though, as does the Civic Type R engine

so another cherished myth bites the dust...
Bob

I only said think, Im not certain. Im pretty sure the S2000 Westie that Blink made had a conventional sierra back end. Some of the older Vtec Honda engines certainly did turn the wrong way tho.

modern honda engines spin the right way, older ones spin the wrong way, what rwd honda's were there before the s2000?

Ned.

I thought that quite a few Japaneese cars spun "the other way" around.

Would be great with a 140BHP torque engine
The V form of the engine would look great in a middie ( painted red for the Ferrari fans)

Does anyone have a good idea of a diff running the "other" way ? please please please

Cheers

Technically speaking Harry, a Diff should work perfectly in a "back to front" application...
so long as....
1. You fix any breather that it might have,
2. You check that it has opposed conical bearings to deal with the thrust issue (I've never come accross one that doesn't), and....
3: that your vehicle has a good rollbar (incase you want to roll it upside down to drain the diff oil)

Engine runs the 'right' way, so has a normal 3.54 esccort diff, and 185/70/13 tyres.

Cruises in top at about 13-14mph per thou. Revs to about 8.5k, so top speed about 115ish.

Not used it on track yet, but would imagine it might run out of revs on a big fast open track, but would be fine on a tighter & twistier one.

If you were going IRS you could use a 3.14 sierra diff (if you can find one) and go up to 15" wheels with high-ish profile tyres (or even 17" if you needed it to be longer-legged.

hth,
Adam.

quote:

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Originally posted by ned
modern honda engines spin the right way, older ones spin the wrong way, what rwd honda's were there before the s2000?

Ned.

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how whre the exhaust made??

and what about the original size and shape etc..??

what did you do with that point??

TKS