Gary Osborne

right then , just finished a 31/2 year build on my cossie and went for a spin today to find any potential teething problems.

anyway it turns out that my boost controller wont play ball and was only giving me 1.5 bar.


so estimates please on a standard engine with a harvey spec t38, 500 cooler, mongoose etc as it felt quick but not that quick
__________________

mechanic28

iTrader: (5)

340-360 depending on injectors??get her probably set up or live mapped!!!

Gary Osborne

stu map in ecu on 83lb siemens als, lc, closed loop, coilpack etc.

tbh i thinks the combination of 235 eagles , an adjustable beam and a quaife atb on a hot day has me doubting the power ,

the fecking traction is unbelievable for a 2wd car.

LHD220Turbo

iTrader: (4)

what exhaust housing? .48, .55 or .63?

mechanic28

iTrader: (5)

what beam u got fella!

Gary Osborne

zoo beam , not sure about the housing tbh . harvey gibbs spec t38.

not sure if i like so much traction.... no more hooligan mode

LHD220Turbo

iTrader: (4)

max power depends on your exhaust housing; they normally have. 48 (standard), .55 or .63 stamped on them

.63 i would expect to see around 380; .55 360-370, standard .48, 350ish

Gary Osborne

still have to find my missing 1/2 bar boost.

on with tomorrow

thanks so far for the input

LHD220Turbo

iTrader: (4)

just wind the actuator rod in; you'll soon find the 1/2 bar

JTECH James

iTrader: (13)

std engine, and t38 make 400bhp, maybe a tad more

LHD220Turbo

iTrader: (4)

depends on exhaust housing tho surely?

JTECH James

iTrader: (13)

t38s have a .63....


t38s run a t4 compressor wheel aswell, harveys t38 uses a machined t34 compressor housing, so externally, it looks like a t34, internally its more like a t4

LHD220Turbo

iTrader: (4)

didnt know that

costina

iTrader: (1)

Looks like a T34 with different internals

380 to 420 after that ported head and cams on a std lump

Paul

Gary Osborne

neither did i

JTECH James

iTrader: (13)

t38s have a .63....


t38s run a t4 compressor wheel, harveys t38 uses a machined t34 compressor housing, so externally, it looks like a t34, internally its more like a t4

turbo technics t38 is different, it has a big compressor housing aswell....

Gary Osborne

thank you

JTECH James

iTrader: (13)

what boost are you going to run?

Gary Osborne

2 bar . same spec as richie b9kos.

although i think hes running 28 psi so i might have to go 1.9 or so

JTECH James

iTrader: (13)

yeah, richie makes 400bhp,

if you get bored, stu can map huge boost spikes into the t38..like 3.2bar iirc

mechanic28

iTrader: (5)

not on a standard lump??? would think a standard lump would die with 2 bar held boost?

JTECH James

iTrader: (13)

yeah, would kill it

mechanic28

iTrader: (5)

so 2 bar held sees around 400 in standard lump

Gary Osborne

i am bored. and after only ten miles . tbh im not sure if im getting too much traction or if its down to the cam timing being out.

im on a hks evc but might tryb the amal valve tomorrow to se what it produces . will try the timing first though.

dont get me wrong, its quick as it is but it takes quite a while to spool up.

will see what tomorrow brings .

but to put it into context ..... i hold the lc button at what im told is 4k (rev counter not back from speedy cables yet) dump the clutch and it just bogs down. no need for lc at all today. dumped the clutch at 6k and still no wheel spin just bog for a sec then spool

mechanic28

iTrader: (5)

well cam timing out aintgong to be helping at all fella

JTECH James

iTrader: (13)

from a t38 yes

JTECH James

iTrader: (13)

somin not right there, check all your base settings, find the missing boost...

mechanic28

iTrader: (5)

cool!!!although not sure how long it will last lol!would imagine it would have some good torque as well being standard c/r etc

Gary Osborne

will get more boost in there and do the timing. fuelling seems to be spot on and nevergoes near 12,s on boost. egts of aroud 600c when giving it some.

will report back tomorrow, cheers for the help

pani_k

iTrader: (1)

I thought a spike was only as soon as you come on boost then it would drop off and hold whatever you set it to? So a spike can't be all bad for a split seconds? Even 3 bar?

Jasesapphy

iTrader: (1)

t38 would have a .63 otherwise they would surge there tits off

mechanic28

iTrader: (5)

this is true but a standard cossie lump would self destruct at 3 bar no matter how quick i would think!

JTECH James

iTrader: (13)

wouldnt it just

pani_k

iTrader: (1)

That missing half bar or even more would make it a different animal altogether which is why it might feel flat now.

JTECH James

iTrader: (13)

dont underestimate a std yb...it would be more a case of the std engine being tired rather than not strong enough, give stu a new std engine, and a set of air injectors, i bet it could suprise a few people!

SS1

iTrader: (3)

ok

Gary Osborne

as i said earlier this is a stu setup and on a 1000 mile engine .

everything weight matched and dynamic balanced.

will grab an old amal valve now and see what it does for me .

i reckon im short of .4 of a bar off my max safe boost so hopefully it will make the difference

pa_sjo

I'd say around 370-380bhp at 1.5 bar on that turbocharger.

Lo@der

iTrader: (8)

1st or second gear launch?
1st gear launch T34.63,road 215 tyres, std beam (stu live map) example below.

Lo@der

iTrader: (8)

sorry peaks 1.9 bar boost by the way.

so even with 235's an a adj. beam, a T38 should be something like the above vid.