View Full Version : 1.4sr with ast3 4-1 32/34. power?
spike24
30-03-07, 10:06 PM
hi i am currently re-building a nova engine. its a 92 1.4sr, i've fitted a kent ast3 cam, a full janspeed line including manifold, a 32/34 weber carb and a vernier. what i want too know is any1 with the same set up could tell me what the rolling road bhp and torque reads it would be pumpin out. many thanks. spyke:tard:
Welsh Dan
30-03-07, 10:42 PM
I'd guess around 90odd, but you'd do better with a 1300 head and inlet manifold as the ports have better flow.
Jon_nova1
30-03-07, 11:48 PM
yer what he said lol
youd get alot better gains with a 1300 head and inlet :)
mikey14sr
31-03-07, 10:03 AM
Doubt you'll get much more than 75bhp/70ftlbs without fitting the better head and inlet manifold.
SUP4NOV4
31-03-07, 10:07 AM
Ive got a engine to fit which is a 1399 with cam and vernier carb and k+n i dont know what its going to be like but im very interested to find out
spike24
02-04-07, 02:12 AM
are 1.4sr not 90 bhp 2 start off with, how cud the bhp still be the same.
1.4sr are 72bhp standard i think?
You should make about 80 with that setup.
There 72bhp std, but your keeping the biggest restrictions a 1400 engine has, the head and the inlet.
Swap the head and inlet for 1300 items and you'd probably see about 90bhp
spike24
05-04-07, 07:51 PM
i've work done too the head aswell. ported inlets and outlets too match manifolds, polish, skim, up rated valves and followers. whats the difference with the 1300 head? wud a 1200 be any good?
the ASt3 is a bit of a bonkers cam, i hope your bottom end is upto the job of revs.... then again the carb will restrict it down a treat
Welsh Dan
05-04-07, 11:30 PM
i've work done too the head aswell. ported inlets and outlets too match manifolds, polish, skim, up rated valves and followers. whats the difference with the 1300 head? wud a 1200 be any good?
The 1300 head has much better ports than the 1400, but if you've ported the 1400 out properly then there should be no reason to change.
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