10 replies to this topic

[Pauly]

Hi all,

Got my engine running yesterday and been thinking of how much power its going to be putting out, it wont get R/R yet due to me running it in, but just thought it would be nice to get some figures to how much it may be making when it comes to it.

Heres the spec.

1310 cc
10.5:1 Compression ratio
AE 21253 +40 Pistons
Std roads
Std crank, re-ground and balanced as rotating assembly
Kent MD276 cam
Kent duplex vernier timing gears
Lightened followers (if it makes a difference)
Minispares 1.5:1 Ratio rockers
SRE fast road head (stage 3 spec), bigger inlet valves (35.7mm), ported, polished, 21.2cc combustion chambers
MED ultralight flywheel, standard backplate, orange diaphram with fast road clutch
Hif 44 with k&n cone
Standard metro electronic dizzy 65dm4, re-curved by h&h to engine spec.
Minispares torquemaster inlet manifold
Maniflow Stage 2 LCB with 2" s/s fletcher exhuast system

[Sir Cheat]

With that spec i would hope for around 100bhp

[Racer_Pete]

i'd say 70 at the wheels with a 276

[Ouster]

90 at the fly. No way will that make 100.

[WiredbyWilson]

was going to say my 1330 with similar spec and weber 40 made 89.9bhp, with a similar figure for torque.

Edited by Wilson1330, 04 June 2010 - 08:51 AM.

[GreaseMonkey]

80-90 BHP at the flywheel

[Ouster]

Ooh, just found the RR graph for the 1310 I had:


The spec went something like:
HIF44
Standard stage 1 stuff, 1.75" exhaust
'Stage 5' inlet and outlets (37mm/31mm)
Cooper s double valve springs
1.5:1 roller rockers
Power max pistons
Lightened con rods
Lightened / balanced crank-flywheel-clutch
Kent 276 cam

[Cooperman]

A similar spec engine I built, but with twin HS4's on a gas-flowed inlet gave 92 bhp at 6000 rpm at the flywheel.
However, it was very flexible and great to drive throughout the rev range compared to a similar engine with a 286 cam.

[Pauly]

So about 80-90 fly power, about what im thinking.

Cheers guys .

[richieg]

If you had this spec with 1293 instead of 1310 or 1330, 1380, would the power be roughly the same just less torque?

If you ran this with 286 cam could you expect much difference in power or just higher rev band

[satvinder]

ive got a tasty 1293 migila lump. race spec and i think it was running 120bhp before it got stripped from my mates car. now ive got the engine to play with.