fj20 head flows its tits off
 

right, the fj20 head flows 129cfm as standared @ 10.25 lift, but the ports are that large that if to much is taken out, it would slow the air speed, so they have been reshaped and slightly ported on the inlets, now with bellmouths it has seen 143cfm @ 10.25 lift, it saw 150cfm @ 11.00mm lift, and just carries on flowing the more you lift it, but 10.25mm is the highest lift that they do, but this is before the 3 way seats have been done, so we are expecting around 150cfm anyway, the biggest job has been done on the exhaust ports, i've got about a cup full of ally that has come out of them,Andy @ AMT engines thinks by comparing the evo head which only flows 117cfm as stock, says that the evo head would never flow like the fj head, so the evo would have to run much higher boost to achieve what the fj engine could on lower boost, making the fj a lot more reliable motor, he said that a 1000BHP:eek: is not unrealistic if i wanted it, so watch this space;)

1000 BHP !!!!

You know you've got to... :D

i just got the flow bench chart, it flows 152.1cfm.:)

If you look at the designs of the paths, leading from outside the head down to the valves, there is very little change of direction. The inlet side goes in at like 30 degs downward towards the valves, so there is very little change of direction of the airflow, especially as the valves are angled themselves. Its a much better head than the CA18DET and SR20DET.

just been talking to Ben at Angelworks and he says the peugeot s16 head flows 150cfm at 10" as standard and can gain 15cfm with 5 minutes work. what pressure was it done at?

what cams are available shaun for this head?

not sure what pressure it was done at, but andy has done a peugeot 16 valve turbo conversion in a 205 and he said that the fj head is flowing slightly more air than the pug on his flow bench,but there are more higher lift cams availible for the pug.

the cams are tomei 288 duration and 10.35mm lift.

Bloody hell Shaun, 1000 bhp? Has to be done!

Out of interest, what did you ET head flow?

stock one -around 87cfm ported one -97cfm

Nice... And is this a fj20et or just fj20e head (well was before the mods)? And do you know is there any difference betwen those two?

its an fj20e head ported with bronze guides, i'am doing the turbo conversion, using 90mm wiseco pistons, crower steel rods, nitrided crank, modded skyline top mount stainless exhaust manifold, with twin external wastegates, huge plenum with ram pipes, t72 or t76 turbonetics bb turbo, tomei cams and verniers and tomei steel head gasket, plus sard 1000cc injectors.

Wa.... Thats some nice setup. I have a fj20e in my garage, so i think ill keep it for a beeter day, cause i see it has some potential...

Sounds like good progress to me. Top Work Shaun:cool:

m8, that looks a master piece, i bet your well pleased with it, whens the approx finish date???

not shure yet mate, but i know i'll have to have a dirty great opened bulge on the bonnet:D , to sit the t76 under mwwwwwaaaaahhhh;) .

http://img.photobucket.com/albums/v2...6122006003.jpgtwin wastegates as well, i've bought one today its a 38 mm tial.:)

fuuuuuuuuuuuuuuuuuuuuuuuuuck shaun that makes me want to sex wee:p


Thats awesome. Its made my eyes water. That is one seeeeeeeeeeeexy setup


Whats that turbo rated too bhp wise? Or in other words whats your bhp aim now that you have it

not sure jon, about 850bhp or 1000bhp, probley 850bhp i'am thinking, i'll have to check the andy.

I dont mind driving it at Rockingham again when its finished :D

No wonder your uprating every single bush etc. that poor silvy is going to be torn inside out. A full roll cage is definately on the cards :D

i think the chassis will need beefing up.

http://img.photobucket.com/albums/v2...6122006008.jpgtial wastegate, just need another now.

bloody hell big guy! there must be a windfarm missing a turbine up your neck of the woods! looking awesome mate, thats sooooo :cool:
Reckon youll have trouble seeing over the bonnet bulge itll be that big

you don't need to see in a straight line, i'll be closing my eyes and praying to god;)

im lost for words shaun. christ! u da man:D i really have to get my finger out to keep up with everyone on here. roll on rockingham:cool:

wow that turbos massive,looks great polished like that,super looking ex manifold too:cool: ,did you finish that inlet manifold you were making and what are you getting next?

i have'nt finished the plenum yet mike, i've had a rod sent to crower, so they can make me a set of steel rods, they will be about 6 weeks,they will come back with my forged pistons, the engine will have to be dropped in the mk1, so that i can crack on with the plenum,i'll put the i/c in so that i can fabricate the pipe to the throttle body, then i'll have to do some saving for the cams,i don't know how long it will take but it will be worth it in the end.:)

cause it will be worth it mate,its shaping up real nicely already i reckon,ive got crower rods as well;)

Sounds like a good plan shaun. I bet a clutch is going to set you back about 600 squidilys though isnt it?

i don't want to think of that yet jon.

hahahaha. well you can run it in on a standard clutch cant you. Pay yourself a pound for every boring running in mile you have to do. Its going to take a bit of patience and time. jae 2008 should be a good year for it i recon :cool:

i've spoke to ben diggles with the 9.i sec gazzell, he says over there they test the cfm on there heads at 26 inch of water, mine was done at 10 inch of water, so at 26 inch mine would flow 262cfm.:)