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Author: Subject: newbie here, would love some info on bike engine conversion
calvins_media

posted on 2/1/15 at 04:11 PM Reply With Quote
newbie here, would love some info on bike engine conversion

Hi guys as stated im new here and am looking to install a zx10r engine into a fiat uno mk1 1985

so far i have got myself a mazda mx5 rear sub frame

im hopefully buying a zx10r engine very soon unless anyone has a powerful bike engine for sale here at a good price

my main question is do i need to install a secondry output shaft bearing from the engine to take the strain of carrying 750kg connected to the chassis or will the zx10r engine casing take it? the builds that i have looked at on google havn't but i just cant imagine a bike engine casing taking 171hp with 750kg behind it

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daniel mason

posted on 2/1/15 at 04:15 PM Reply With Quote
There's a bargain zx10 on here in for sale section somewhere within last few weeks!
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daniel mason

posted on 2/1/15 at 04:17 PM Reply With Quote
Still there. Seller name flick!
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calvins_media

posted on 2/1/15 at 05:19 PM Reply With Quote
ohh thanks mate i will look now, do you have any experiance with the secondry output shaft bearing carryer from the engine or will the gearbox casing do the job?

nice to meet you, i am james

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daniel mason

posted on 2/1/15 at 05:20 PM Reply With Quote
Are you running a chain drive as per the bike?
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calvins_media

posted on 2/1/15 at 05:41 PM Reply With Quote
yes mate is there other options then? i have posted to the sale but i dont think i can message him because im new to the site

[Edited on 2/1/15 by calvins_media]

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wylliezx9r

posted on 2/1/15 at 06:58 PM Reply With Quote
I've never heard of anybody using a secondary bearing and I've looked at loads of varying bec installs.
One thing I would say is that I wouldn't expect the performance to be great carrying around 750 kg. Is that the weight with the engine fitted ?
For a BEC to really move you really need to be around the 500 kg mark especially with a litre engine. Just my opinion though.





I spent a lot of money on booze, birds and fast cars. The rest I just squandered.
George Best

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calvins_media

posted on 2/1/15 at 11:45 PM Reply With Quote
sorry the weight is originally 696 kg with original engine and all interior out the factory so by the end i might get 600kg?

heres one with a r1 engine and thats the mk3, much heavier and all round a larger car https://www.youtube.com/watch?v=4j824pid9UQ


[Edited on 3/1/15 by calvins_media]

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coozer

posted on 3/1/15 at 09:53 AM Reply With Quote
Mate of mine had a Mk1 Fiesta with a zx9r in it. As much the same as a 7 install he went the rwd route. Just a few bracket and a basic cradle in the engine bay, prop adapter running back to a Capri axle hung off some radius arms. Down side was loss of the fuel tank under the back seat, that went in the boot in a mk2 escort all rally job. This left tons of room underneath for the radius arm suspension.

Only knacker in the whole job was he mounted the exhaust solid to the body... Boy what a racket! Fast as tho..





1972 V8 Jago

Midlana when I find the space...

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calvins_media

posted on 29/1/15 at 08:21 PM Reply With Quote
new idea,
i have a mazda mx5 diff and half of the propshaft (CUT).
instead of using chain drive is there any solution out there that can connect to the output shaft from zx10r engine to the remaining half of prop obviously welding something onto it?
i will be putting engine in middle of car wont the shaft wont need to be long

[Edited on 29/1/15 by calvins_media]

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CosKev3

posted on 29/1/15 at 08:33 PM Reply With Quote
quote:
Originally posted by calvins_media
new idea,
i have a mazda mx5 diff and half of the propshaft (CUT).
instead of using chain drive is there any solution out there that can connect to the output shaft from zx10r engine to the remaining half of prop obviously welding something onto it?
i will be putting engine in middle of car wont the shaft wont need to be long

[Edited on 29/1/15 by calvins_media]


the engine would need to be longitudinal like in front engined kit cars, not transverse like it would running a chain diff.

If so you need a prop adapter, then the matching prop futting to bolt upto it.all front bike engined kit cars have them,plenty of pics about

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calvins_media

posted on 7/3/15 at 09:45 PM Reply With Quote
anyone know where I could get a prop adapter or a prop that would go from zx10r engine to mazda mx5 diff?
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CosKev3

posted on 7/3/15 at 09:48 PM Reply With Quote
Your not really making it clear how your engine is mounted for people to answer.
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calvins_media

posted on 7/3/15 at 10:46 PM Reply With Quote
its going to be mounted the same as any rwd car using a prop mate
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daniel mason

posted on 7/3/15 at 11:00 PM Reply With Quote
Ab performance do prop adapters (front) and and any prop maker will be able to make a prop to suit! Dunning and Fairbank, Bailey Morris etc
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calvins_media

posted on 7/3/15 at 11:06 PM Reply With Quote
perfect mate will I need some sort of carrier bearing keeping In mind want to keep the prop as short as possible like 20 mil or will it run fine without shaking loose and making a huge mess, like do the prop adapter fit really really really well? sorry for these questions but you guys know your stuff, also the diff unit is currently on rubber mounts should I make them solid so it don't jump around
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Slimy38

posted on 7/3/15 at 11:08 PM Reply With Quote
Why did you go for the MX5 rear subframe? It's a fair hunk of metal that can be made up from RHS and be so much lighter. If you're going for the BEC option you'd do well to make it as light as possible.
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calvins_media

posted on 7/3/15 at 11:35 PM Reply With Quote
mainly due to my skill level and lack of equipment, by going with that chunk of metal it will cut out the most diffecult part for me, this will be my first so im not too fussed about weight even though i know a big problem will be clutch slip and pulloff but if needs be i will ditch the heavy wishbones and make up my own lighter, but the actual subframe itself isnt too heavy its everything thats bolted to it also im hoping to make it removeable {bolt on}
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calvins_media

posted on 7/3/15 at 11:43 PM Reply With Quote
this isnt my one, mine looks a bit rustyer but, look at the size of the arms they realy are heavy like you say, i will be building my own when i become a bit more pro


[Edited on 7/3/15 by calvins_media]

[Edited on 7/3/15 by calvins_media]

[Edited on 7/3/15 by calvins_media]

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calvins_media

posted on 8/3/15 at 01:51 AM Reply With Quote
ihink this is what i need?


https://dl-web.dropbox.com/get/cimg0040.jpg?_subject_uid=355634756&w=AAA2rVRtEC5hl9x__VXsLuvAtFpRIZidYN4vGQARZVojww

[Edited on 8/3/15 by calvins_media]

[Edited on 8/3/15 by calvins_media]

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daniel mason

posted on 8/3/15 at 07:56 AM Reply With Quote
The car may end up pretty heavy for a BEC! Have you thought about a different car engine instead? In my opinion you would want the car to be under 500kg with a bike engine to get the best out of it. Something approaching 750-800 kgs will not feel the same
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calvins_media

posted on 30/3/15 at 08:18 PM Reply With Quote
its still happening, still in thinkmode,
everythings off the car, got to think of what to do
im thinking
fwd
zx10r
front mounted
make up a frame to carry the zx10r engine and the chain diff and mount to the original car engine mounts, so replicating the cars original engine/gearbox setup but with a frame, hope this makes sense, then I can tack weld everything and take it to a proper welder

then whatever chain driven diff I get eg fiesta shafts, I can get a professional to cut and join shafts to the required length and weld to my shafts and then I can keep the brakes and everything, I now have punto gt brakes and hubs and shafts so it will all be strong enough

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daniel mason

posted on 30/3/15 at 08:40 PM Reply With Quote
I think a lot more planning is needed. Your best bet is front mount the motor, prop drive to the Mazda rear end!
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calvins_media

posted on 30/3/15 at 09:08 PM Reply With Quote
quote:
Originally posted by daniel mason
I think a lot more planning is needed. Your best bet is front mount the motor, prop drive to the Mazda rear end!


sold the mazda rear frame lol
its got to be fwd as I don't want to cut the shell, a lot more planning is definitely needed indeed, but my hearts set on framing the motor onto the original mounts, seems the most logical, I know it wont be so much fun as rwd but it will still sound nuts and light the wheels up, also please don't forget I am a amature builder, not professional by any means, but professionals will be doing the important parts like welding the frame and shafts, the nuts and bolts I can sort out

I wish there was a reliable builder in the Cambridge area I could pay to help me with the setting up, jigging, advice and so on

I got a lancia hf turbo 1.6 engine and box that I was going to put in but the custom engine mounts made by Avanti motorsports no longer make them and have lost there drawings and the weird gear linkage setup i cant source and also the brake servo would need the crossover bar to move it to passengers side, which is impossible to find anywere, aswell as a lot of other parts needed, its not what I wanted to do anyway so turned out a good thing, ive always wanted a bike engine car just for the sound and the fun factor, im not going to give up, wether its the lancia engine or a zx10r i will make this car shift somehow

i will probably get to a stage of no return at somepoint then have no choice but to carry on

[Edited on 30/3/15 by calvins_media]

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