AX JP4 turbo on NOS NOW 6 SPEED - Page 14 - Saxperience

tweeqd · 6th October 2010, 22:11

not that big, CR turbos are custom building me a turbo to work with my cam and im running quite high comp as i have water inj
i dont want to go too big with the turbo as i can only rev to 7.5k

Mathias · 6th October 2010, 22:19

Spec of the cam? Must be an insane spec on the turbo to give that figure! Fair play to you!

What rods - pistons etc you running?

s555dan · 6th October 2010, 22:21

Top notch! Truely inspiring!

tweeqd · 6th October 2010, 22:50

modified de stressed S 2 rallye block
Dyanmicaly balanced bottom end
standard 16v shot peened rods
arp bolts
1mm omega pistons
my own ported, skimmed head with cut back valves
custom made cat cam
piper valve springs
kent vernia
S1 inlet
Lancia intergralle EVO injectors
Fuelab pressure reg
sytec uprated pump
custom turbo
manifold made by me with tial 38mm external wastegate and screamer pipe
custom made Janspeed 2.5'' stainless system
AP twin plate lug drive clutch
direct port nitrous kit with progressive controler
Be box conversion

rorz_vts · 7th October 2010, 09:42

very nice ax mate looks well fit

tweeqd · 7th October 2010, 18:53

Quote:

Originally Posted by Aidan_turbo

fair enough sounds good is it just a track car?....

my car is built for 2 bar of boost so hopping near the 400 mark once my gear box comes through

i do use t on track but its mainly drag, its still road legal though

Sophia_Bush · 7th October 2010, 19:34

see you at DT mr £50note man

tweeqd · 7th October 2010, 20:26

ill be taking a pinkey from you son

tweeqd · 24th November 2010, 19:47

got home today and had a box waiting

£600 woth of custom made turbo, now i can start making a manifold and wait for the woosner forged rods to arrive

blackie_2k5 · 24th November 2010, 20:22

i love this

been waiting for this! nice, has this been modified due to the lack of space in the bay? looks well tbh!

i await eagerly mre updates, whats the spec of it?

btw, you got those injectors still?

tweeqd · 24th November 2010, 20:33

the spec is custom between me and marc at CR turbos
its a non wastegated exhaust housing, a modified compressor houseing and 360 thrust
its designed to be on full boost by 3k rpm and will flow enough for 360bhp but can be modified in the future if needed to 420bhp, i am resricted with space between the block and rad so didnt want an off the shelf turbo

the guy who balances my engines got me a set of brand new woosner forged rods for under £500, im having a flange made for the manifold and external wastegate and once i have them i can make the manifo0ld and screamer pipe

yes mate still got them

blackie_2k5 · 24th November 2010, 20:37

nice, prob be in ouch for the injectors next week, screamer pipe <<< i want, but i cant bring myself to chop up my down pipe, and cba to make another, maybe after a few months of it being on the road

dannygti · 24th November 2010, 20:38

Quote:

Originally Posted by tweeqd

the spec is custom between me and marc at CR turbos
its a non wastegated exhaust housing and a modified compressor houseing
its designed to be on full boost by 3k rpm and will flow enough for 360bhp but can be modified in the future if needed to 420bhp, i am resricted with space between the block and rad so didnt want an off the shelf turbo

the guy who balances my engines got me a set of brand new woosner forged rods for under £500, im having a flange made for the manifold and external wastegate and once i have them i can make the manifo0ld and screamer pipe

yes mate still got them

im making my own exhaust (turbo) manifold atm, have you came up with anything yet? got any designs your leaning towards?
what size tube you going to use?

ive got my design pretty made up now. keep it simple is the way forward i feel (simple, not shit lol)

blackie_2k5 · 24th November 2010, 20:43

Quote:

Originally Posted by dannygti

im making my own exhaust (turbo) manifold atm, have you came up with anything yet? got any designs your leaning towards?
what size tube you going to use?

ive got my design pretty made up now. keep it simple is the way forward i feel (simple, not shit lol)

when i was going to do mine, i planned on seeing what the ex ports could be opened up to max, then finding a tube near that size but slightly smaller so the mani could be port matched to the head. simple is good

unless your purging it.... the less welds the better

dannygti · 24th November 2010, 20:50

Quote:

Originally Posted by blackie_2k5

when i was going to do mine, i planned on seeing what the ex ports could be opened up to max, then finding a tube near that size but slightly smaller so the mani could be port matched to the head. simple is good

unless your purging it.... the less welds the better

bigger isnt better though when it comes to turbo manifolds... smaller primarys keep gas speed up and spin the turbo up quicker.
ive got some tube but its a big big for my liking, its about the same sze as the dp engineering manifold. id rather have smaller but nevermind.

tweeqd · 24th November 2010, 20:52

ive found a standard exhaust manifold that has almost identical port sizeing to the vtr and is perfect to mount a turbo to, just need to swap the flange and adapt to fit the wastegate, once i have the engine run in the turbo will be fitted and trailerd up to janspeed to have the downpipe modified to fit the new turbo

i think the dp ones are too big and will induce a very small amount of lag (although i have direct port nos to stop lag)

dannygti · 24th November 2010, 20:56

Quote:

Originally Posted by tweeqd

ive found a standard exhaust manifold that has almost identical port sizeing to the vtr and is perfect to mount a turbo to, just need to swap the flange and adapt to fit the wastegate, once i have the engine run in the turbo will be fitted and trailerd up to janspeed to have the downpipe modified to fit the new turbo

i think the dp ones are too big and will induce a very small amount of lag (although i have direct port nos to stop lag)

ahh right, thats pretty much what ive got.

turbo looks good mate, i would like a non wastegated turbo but im going to have to go for a wastegated one and tack the trap door shut

blackie_2k5 · 24th November 2010, 20:56

Quote:

Originally Posted by dannygti

bigger isnt better though when it comes to turbo manifolds... smaller primarys keep gas speed up and spin the turbo up quicker.
ive got some tube but its a big big for my liking, its about the same sze as the dp engineering manifold. id rather have smaller but nevermind.

my plan was to go 4 to imediate 2, to 1 so this was the way i planned mine

would still keep spool up to a decent rate but not be too restrictive, my plan was hinged around a fairly smallish turbo as it was all fairly low boost when i planned it... plans have since changed though lol

dannygti · 24th November 2010, 20:59

Quote:

Originally Posted by blackie_2k5

my plan was to go 4 to imediate 2, to 1 so this was the way i planned mine

would still keep spool up to a decent rate but not be too restrictive, my plan was hinged around a fairly smallish turbo as it was all fairly low boost when i planned it... plans have since changed though lol

ill be honest, even a bodged up standard manifold will be good enough for most peoples conversions. for other manufacturers you can buy cast "log" manifolds that are totally to cock in terms of "equal length tuning" but still flow 400hp+. this is the nature of turbos. from what ive read the diameter of the pipe is pretty important but we will harldy notice on our "trackday", "road" cars.

blackie_2k5 · 24th November 2010, 21:01

Quote:

Originally Posted by tweeqd

ive found a standard exhaust manifold that has almost identical port sizeing to the vtr and is perfect to mount a turbo to, just need to swap the flange and adapt to fit the wastegate, once i have the engine run in the turbo will be fitted and trailerd up to janspeed to have the downpipe modified to fit the new turbo

i think the dp ones are too big and will induce a very small amount of lag (although i have direct port nos to stop lag)

what mani if you dont mind me asking mate?, just curious, i think the dp mani's will cause alot of lag on a fairly decent size charger, theyve got too much length about them