I have a standard 1.4 SR engine, what could i do to get more out of it, any info is great wanted, nothing like a rebore or twin 40's but maybe along the lines of a cam, RR tune?
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I have a standard 1.4 SR engine, what could i do to get more out of it, any info is great wanted, nothing like a rebore or twin 40's but maybe along the lines of a cam, RR tune?
I would recommend a rebore and some T 40's for a start.
sri head, cam, air filter, exhaust...
plenty of things you can do
turbo it or nitrous oxide :lol:
havent you already asked this? anyway go for twin 40s, the best thing you can do
nos is the "cheapest" way to get more go out of it!
lol i was right and i bet everyone thought i was just taking the pish :lol:Quote:
Originally Posted by cambridge
twin 40's with direct port noz :D :D
get more out the engine by selling it....
strap the engine that skyline had in another forum in the front...then add nos....bobs you uncle...oh you may need to extend the engine bay a foot or two.
Well you did ask
well the way to go about it would be
SRi head
Twin 40s
Cam
and a bit of head work
ummm ok :?
Fit one of these bad boys on top of your carb
http://www.esuperchargers.com/images/schargermain2.jpg
Electric supercharger
well i have a 1.3
with webber 34/32, kent cam, 4-1 manifold and full zorst system
be having a b+ billy head with 1.6 vavles put on when barn sends it to me :lol:
lmao at electric supercharger...
broody, i thought i read someone in about 6 posts that your 1.4 saloon will be contain a pretty "well tuned" engine.. lol..
How much does Nos cost to set up and run !? What internal modifications do you have to do !?
im currently building up the 1.6 lump and it's gonna be a pretty stupid spec, maybe i can run it on what i have planned !? (which would be quality)
why have two people said sri head?? thats the worst out of the lot!! 1.2 head with the 1.6 valves is the way to go
i thought the sri head was the best one (so ive read)
the 1.2 lowers compreshion i know that
no the sri has got round ports which isn't as good as the "cathedral" (i think thats what they call them) shape ports
rite ive just compared the 1.2 and sri heads as i have both in my room and it seems in standard form the sri head will be better, however if you were to put the 1.6 valves into the 1.2 head then this would be better as the inlet ports is better formed and the 1.2 head has a smaller combustion chamber. the sri valves are better than the cavvy 1.6 ones i have also so put them in the 1.2 head i spose. i never new sri's had the same size valves as gtes/gsi's though :?
wrong way round mate the sri had a very efficient head, the 1.4 sr (i believe 'cathedral' head) was shocking, coupled with the higher f/d thats why they were always slower than the 1.3 sr's lolQuote:
Originally Posted by burgo90
i said to use the 1.2 head mate as i know the 1.4's are crapQuote:
Originally Posted by burgo90
The round shape ports offer superior gas flow over any of the other port shapes, hence why 1.4SRs with twin 40s can gain another 8 - 10bhp with just an SRi head on :wink:
you are rong my dear friend i shall try to explain. as the air passes threw the port the air that travels around the top of the port travels alot faster than at the bottom of the port, this creates more turbulence therefore slowing down the flow of the air. now with the cathedral shape it makes the air at the bottom of the port travel the same (ish) speed as the air at the top, therefore you get less turbulence and a better flow.Quote:
Originally Posted by SKoob
I can garuntee you its the round ports that make the SRi/GSi/GTE heads that bit special, otherwise vauxhall would of stuck with the cathedral ports :wink:
doesnt turbulance create a better fuel air mix so you get a better fuel atomisation? hence a better more efficient bang??
To be fair mate a lot of people i have spoke to have used sri heads with t40's on j series engines so there has got to be somthing right about them, although i am not distputing tat the 1.2 head is better than the 1.3 1,4 sr ones
sri head is the one you want. it got me 12bhp just from changing the head
on a sr after full exhaust and k+N
if added a sri head then would it make a postive or would you need more
it would give you a postiveQuote:
Originally Posted by Boro'Nova
in standard form the sri head is better yes ok i agree but if you put the same valves into the 1.2 that would be better
ive done flow bench testing on a 1.2 head and found that if you build up a 3-4mm layer of material and blend it down to the valve you gain about 4% more air flow, ok 4% isnt much but its a gain from reducing the port size and making it nearer round.
read vizzards book on ford sohc tuning as the heads are baically the same
ok.
1.2 / 1.3 have same Cathedral shape inlet ports which are better than the 1.4 Sr's Square Ports.
SRi head has round shape ports and is better than both of these.
1.2i and 1.4i have same bad square shape ports as 1.4sr head.
GSi has Round ports like Sri.
Quote:
Originally Posted by benji
GOD has spokenQuote:
Originally Posted by Snowface
happy now :lol:
lol.
you could do a Cylinder Head Top Trumps to compliment the Novaload ones.
stats could be
# of Valves
Inlet shape
compression ratio
valve diameter
etc.
lol.
in that case then is there any difference between the sri and gsi heads ??
p.s. i am only going by what i have read on various websites
no they are the same head, a lot of the parts that are on the gsi are shared with the sri. the gsi may have larger valves in but i am not sure about that
and obviously if you put a GSI/GTE head on an sri the compression ratio would drop.
so, ur all saying that, if i put my T40's on a SRi head then it'll give me MORE power? :twisted:
and, also add the NOS kit demon tweeks stock for carb'd motor's? :D
doesnt the sri head have all the hole's etc for the injectors tho? if so, how do i block 'em up?
Quote:
Originally Posted by LAST OF THE NOVA SR'S
you mean the inlet holes? If you block them up mate your car won't run at all. Thats where your T40 manifold bolt onto.
holes for the injectors are on the inlet manifold. you get a new maniflod with the 40's anyway so dont need to worry about the injector holes. go on, indulge in some direct port noz :D stady 25-50bhp shot should be ok with a controller 8)Quote:
Originally Posted by LAST OF THE NOVA SR'S
the gsi and sri heads are listed as different part numbers so they may have a different clearnace volume too
and the injector holes are on hte inlet manifold ;)
well, me with my excellent spannering/welding skills. im sure that ill get the SR T40 inlet onto the SRi head! :lol:
so, will i be the first to have a T40'd + NOS'd 1.4SR on the site, or has ne1 else got 1? :|
oh yeah, anybody got sum mahhooosive brakes i could by? ill need em! :lol: