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Author: Subject: fitting cbr engine
oadamo

posted on 15/12/07 at 03:56 PM Reply With Quote
fitting cbr engine

hi i put my engine in the chassis. the chassis was flat on the floor and the engine. the sprocket wa 10in from the floor. and the top of the engine was 10in above the top rail.does this sound right or do you have to mount it sticking out the bottom a bit. anyone got the size from the top rail to the under side of the bonnet.
adam

[Edited on 15/12/07 by oadamo]

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worX

posted on 15/12/07 at 04:14 PM Reply With Quote
Hi Adam

I don't know about your engine and chassis specifically, but it is commonly accepted that the engine hang lower than the chassis rails.

The amount it hangs lower is usually decided by the height of the bodywork in a lot of cases.

If you measured the height of your chassis, state what bodywork you are going to use and the height of the engine, then someone could compare like for like with you.

For eg an MK with 919 hangs about an inch and a bit (prob about 30mm) lower than the chassis rails, but on mine the 919 is only about 5-10 lower than the chassis rails...

Steve






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oadamo

posted on 15/12/07 at 04:19 PM Reply With Quote
do you ever have any probs with it hanging lower then the car. like over speed bumps and pot holes.
adam

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Kev99

posted on 15/12/07 at 04:31 PM Reply With Quote
Hi on the indy it hangs out the bottom, if I were doing it I would have it as high in the chaise as I could as to not have it hanging out of the bottom

As I have already cracked the sump on a speed bump






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BenB

posted on 15/12/07 at 05:51 PM Reply With Quote
My ST1100 hangs about 80mm below the chassis rail!!! That's why I'm fitting a dry sump... I haven't cracked the sump yet but I run quite a bit of preload on the front shocks (and therefore the front of the car runs quite high). Not the best option for handling but until I dry sump it, it's the only option...
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jambojeef

posted on 15/12/07 at 06:18 PM Reply With Quote
Yeah the CBR 1000 engine is quite tall really.

Ive gone for a flat bonnet with no bulge and mine sticks out a good 3" below the chassis bottom rail - maybe more.

Makes speedbumps pretty much impossible and so needs some careful planning of routes - when I actually go far enough to need a route...!

My advice would be to sacrifice some of the centre of gravity issues for a bit of extra practicality and peace of mind by raising the engine and bulging the bonnet.

Geoff






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oadamo

posted on 16/12/07 at 05:17 PM Reply With Quote
ive taken a few pics so i can show you what i mean.
adam

with this pic it looks like the prop will be facing up in the air



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