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Home > Beginners Tech > standard bottom end

burnard

13 Posts
Member #: 10984
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Reading

7th Dec, 2014 at 08:48:06am

Hello,

I was wondering if somebody could tell me how much power a rebuilt standard bottom end could handle?

Am planning a sueprcharged build, but on a budget so dont want to spend any money that i dont need to.

I would like to knowhow much power the standard pistons, conrod and crankshaft and also push rods can handle?


Cheers,

Chris.


Carlzilla

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3673 Posts
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Quarry Bonk

7th Dec, 2014 at 09:12:14am

Everything other than the pistons will take what you can throw at it from the point of view of an sc setup, but you want some good strong pistons, either 21253 type or a good quality cast piston. The 21253s can be dished out too if req'd.

On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper

On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!!

17.213 @ 71mph, 64bhp n/a (Old Engine)

Joe C

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12307 Posts
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Carlos Fandango

Burnham-on-Crouch, Essex

7th Dec, 2014 at 09:30:45am

yep as above,

its high RPM that kills the crank and rods, so as forced induction lumps tend to be sensible with there max rpm its not usually an issue.

you want a standardish cam too, 266, MG metro, std metro, sw5, somthing like that.

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



stevieturbo

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Northern Ireland

7th Dec, 2014 at 01:53:06pm

I'm sure some will also depend on what "standard" engine you are starting with for the build.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will


burnard

13 Posts
Member #: 10984
Member

Reading

7th Dec, 2014 at 04:23:29pm

Hello,

Sorry i did forget to say the exact engine, it is a 1275 SPI 'cooper' engine. but will be run on a single hif44.

We were planning to use a kent 276 for the build, but if you think that is a step too far then a 266 will probably end up being fitted.

Cheers,

Chris

Joe C

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12307 Posts
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Carlos Fandango

Burnham-on-Crouch, Essex

7th Dec, 2014 at 04:29:47pm

a 276 will be ok for a supercharged build, you can get away with a slightly hotter cam than with turbo's

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/


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