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What Is The Most Bhp Out Of A 1275 Without Forced Induction


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#1 mr cooke

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Posted 04 January 2020 - 09:08 PM

Just out of interest what is the most bhp out of a 1275 engine without forced induction .

Thanks Chris 



#2 hazpalmer14

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Posted 04 January 2020 - 09:16 PM

5 port head? 16 valve? 8 port? 7 port? Quite a broad question. Standard bore or could be bored and stroked etc

#3 nicklouse

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Posted 04 January 2020 - 09:19 PM

For what use?



#4 mr cooke

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Posted 04 January 2020 - 09:34 PM

If you had the best spec head on a standard bore for road use



#5 Minigman

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Posted 04 January 2020 - 09:49 PM

Miglias running 1293cc put out about 140bhp.

#6 nicklouse

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Posted 04 January 2020 - 09:51 PM

If you had the best spec head on a standard bore for road use

Then I would not be looking for max power it would be a pig to drive. And would need regular rebuilds.

 

a nice round torque figure of 100 would be very very nice. 


Edited by nicklouse, 04 January 2020 - 09:51 PM.


#7 Minigman

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Posted 04 January 2020 - 09:52 PM

If you had the best spec head on a standard bore for road use



A best spec head fitted to a standard spec engine?

Assuming you’re fitting a decent ‘stage 1’ kit at the very least you may see mid to high 70s bhp I reckon.

#8 Midas Mk1

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Posted 04 January 2020 - 11:50 PM

37/31 race head, sw5, 1.5 rockers, 1312cc, 97bhp.

#9 sonikk4

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Posted 05 January 2020 - 12:00 AM

Yes the head is a major player in the spec as without it there wont be much of an increase even with a decent cam.

 

The next thing is the cam as this will account for the driveability of the car. 

 

And the biggest thing is your budget.

 

Swifttune spec engine that they use for racing is 1293 and 140ish bhp with a price tag of £19k. Thats normally aspirated to boot.



#10 MrBounce

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Posted 05 January 2020 - 11:32 AM

 

If you had the best spec head on a standard bore for road use



A best spec head fitted to a standard spec engine?

Assuming you’re fitting a decent ‘stage 1’ kit at the very least you may see mid to high 70s bhp I reckon.

 

I had an MED Road Comp head on a +030" lump; with a Kent 266 cam this gave 79bhp at the flywheel. 






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