23 replies to this topic

[Paul Wiginton]

Very true Sprocket, but even when my car was as heavy as the competition the same was true.

My car is actually too light now, I cannot get my 60ft times down to the 2.1s that I used to do with a heavier car so Im at a bit of a disadvantage.

Paul

[1380gtr]

Before it broke, I had 148 from a seven port engine with a 1380 with a nearly flat torque curve...

The engine was Morspeed, and the head minisport....

I'm sure I would get more with more radical jettings of the carbs but it was for hillclimb

[mini13]

what broke?

[1380gtr]

a carb o-ring=> too poor on a cylinder => piston burnt and block broken on a cylinder

[mini13]

Ah, bad luck,

i've noticed my O rings are not lasting very long.

[1380gtr]

yes, here I wonder if I won't put them wothout the orings... but maybe that the vibrations will be too strong...

But I hesitate to make it a real screamer or too keep it as it was and neraly smooth as a road engine...

[lvm18]

hello, just wondered what jets/chokes etc you were running on your 7 port. Mines a similar spec, with twin 40's

cheers

[1380gtr]

hello, just wondered what jets/chokes etc you were running on your 7 port. Mines a similar spec, with twin 40's

cheers

for the jetting : I used it as a hillclimb racer...

Tell me what you have in your engine I will tell you if it looks like mine as specs... I had 12.2/1 CR...


For info, jets are really big...

[1380gtr]

hello, just wondered what jets/chokes etc you were running on your 7 port. Mines a similar spec, with twin 40's

cheers

for the jetting : I used it as a hillclimb racer...

Tell me what you have in your engine I will tell you if it looks like mine as specs... I had 12.2/1 CR...


For info, jets are really big...

PM me your email, it would be easier by email, as I also have technichal queries concerning this head....

Edited by 1380gtr, 06 October 2009 - 01:36 PM.