timsr33
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Posts posted by timsr33
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i was wondering if these are still for sale and if they will fit a 33gtr and are the f50 calipers 4 or six pot thanks tim
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I found this to be an interesting read:
does any one no where to get the foam from or an alternetive to the foam in that thread
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I thought i would join in and give you my experience as well.
I however have a supra 2jzgte with a gt42.
Long story short, i have very low power numbers for the size of turbo and boost im running, ive tried a lot of things, people were saying also valve float, small cams etc.. after replacing them, i am still having the same issue's.
My boost comes on hard at 5500rpm@26psi and thats where it makes its max HP, then just flat lines all the way to redline.
All the info is in the links here, i have posted my issue's on a fair few forums, so if you can be bothered, have a read what ive done, im pretty sure we may have a similar issue, also running a haltech e11 and having a hard time finding someone to tune it...
http://www.performanceforums.com/forums/sh....php?t=67205139
http://www.supraforums.com.au/forum/showthread.php?t=37070
http://www.supraforums.com/forum/showthread.php?t=529982
Not sure if you'll be able to go on all of them, may need to sign up? and some are a very long read, but plenty of suggestions, just everything ive tried so far hasnt worked, very frustrating!
i originally had the same problem with the power just flat lining with my old setup then i changed to m and w ignition and it made a massive difference in top end but it was still laggy so thats when i went single and my car went back wards but mine was valve clearance fingers crossed
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MAZMAN i relied to your post on supra forums... small world!! it would drive me insane!
timsr33 i had standard cams.. well bog stock motor 1.4 bar same everthing made 315awkw. lag was almost identical,put the cams in a mild head and went to 376awkw on 1.6 bar.
ive been told its the small cams and weak valve springs... but there are the odd freak ones on here making 400+ kw on same boost. either im missing something or they arnt telling us something..
but you have valve springs. wich make me worry about mine. but yours has crazy lag! what was the "clearance issues" you discoverd?
ps.. my girly has a rb25 and a gt35 with .68 ar rear. she made 345rwkw on 1.5 bar. little 252 poncams and type a springs on a 6 boost. now when i built the motor it made 260kw on 1.2 bar i opened up the small radius on exhaust ports only! went straight to 301kw..
so i think our cyl heads are the place to look at.
my valve clearances were only 0.15 inlet and exhaust and when hey heated up they were opening slightly so i redone the clearances my self and redialed my cams and i can get 1.5 bar in 4 th gear by 4800 rpm but i need to get it tuned again because it is leaning out bad now on boost gettting 14 afr so ill add a bit of fuel and then get mark to put it on the rollers again to see how i goes
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well i thought mine was bad....
i have 25pound in a loaded gear by 4300rpm.
mine is IDENTICAL to yours except you have valve springs. my t04z is .84 split (ta45 footprint) 3.5" straight exhaust no cat.
i have an ebay manifold. with 1.1/4" runners.
mine on 1.6 bar makes 376awkw (505hp) on 1.4bar it made 355kw on 1.8 it made 377kw
i think mine is valve float...
ive been looking at yours we both seam to be in the same boat if you end up fixing it let us no im concidering trying standard cams to see if makes better or worse
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how'd you go did you sort it out?
i might of fixed it had a valve clearance issue witch is now resolved but wont no till it gets back on the rollers it seams to make more power now and is coming on earlier so fingers crossed
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Does it hold boost? when you wind on past 15 psi do you still get a flat line or is it all over the place? Whats your spring rate in your WG?
its got a 17psi spring in it and it sits dead flat no spiking or flat spots at all
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I know that...
Well from where the "de-cat" pipe is, same spot, matters not... So i take it as a NO you have not tried the 10mins quick test to totally discount exhaust
i miss understood you ill give it a go tomorow it got to be worth a try thanks
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Also whats your timing control like at high rpm? The only three ECU's I would ever use when using a std CAS is a PFC, std ECU or Motec every other ECU I've seen issues with signal filtering - haven't seen the new Vipec.
pretty good i think mark hasnt complained about filtering only about having to use a haltech in general
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Its probably got no boost at 5000rpm hence the ignition numbers. What does the boost do - its sometimes easier to hear valve float external to the dyno room. Also when valve float occurs your boost can go all over the place. Does more boost make more power through the mid range but then just flattens off upto where it should be making more power?
only making 5 psi at 5000 boost climb sharp then sits flat till 9000 more 7 pound made 7 kws difference and even the base number of 353 at 15 was to low according to my tuner
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Valve float +1, unless the higher load point is running heaps less timing
whats valve float and the timing is only 3 degree less then 15
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Valve float - does the power just nose over? How does the engine sound at this point. Have you got a dyno graph?
it basiccally just goes flat doesnt te engine still sounds fine im just confused that a t04z is making less power then twin t517z it seems the more power i try to make the less it is making
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Scott from insight motorsports is very switched on. Check out his website. He is very helpful. May have some suggestions
ive herd scott is good i might talk to him later in the week thanks for the help
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All 6 runners merge into a peak and then into the turbo unlike some of them that have runners facing eachother.
Have you guys played with cam timing yet?
all the runner come to a point then into the turbo tryed playing with the timing on the old setup but didnt make much of a difference only moved the powerband around no gains from it whats the name of the tuner that you no thanks tim
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the manifold collector has to have all the runners peaked for good flow. How lumpy? will be a little lumpy.
Who is the tuner.
So many factors will cause lag.
Can give you the name of a really good tuner in the area, may be able to help you out
mark at mrc has been tuning it and he cant figure out why its not making power and why its so laggy he does a good job its lumpyer then the rb26/30 he tuned with 290 by 12 cams what do you mean by peaked
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Exhaust manifold design?
Where are the cams set also
the exhaust manifold is a 1.5 inch steam pipe equally length runner at 500 mill each and the cams are set to 0 on inlet and exhaust should such little cams be really lumpy
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Have you dropped the exhaust from before the cat to be 100% certain?
the car has no cat i dont run one as the car is a track car
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Hmm. Sounds very odd. That turbo should be able to generate much more hp.
Any other mods done at the time of the turbo change or just the turbo change.
only the turbo gate and manifold and exhuast to cat all new and its also laggy compared to others on the forum should a t04z with a .82 split housing make 22 psi before 6000
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possibly a boost/exhaust leak then? have you checked all your piping, vacuum hoses, exhaust flanges and the rest?
theres no leaks checked every thing in the leak department ive also done a compresion test today and they are all between 120 and 122
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need some more info. What amount of ign timing? does the timing drop off very rapid once it hits the higher load point? Sounds like its running out of cam though. What specs are the cams. What comp ratio is the engine. etc.
Just throwing around some ideas.
the timing is about between 32 at 5000 and 20 at 9000 the cams are 260 by 9.15 and the comp is 8.3
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cat/exhaust or wastegate?
the car has
no cat striaght pipe
three and a half inch from turbo back straight through exhaust
and a turbo smart 50mill pro gate
i think they should be up to the task
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ive just finished builing my new single turbo setup with a t04z use to have twin t517zs making 511 hp on 22 psi
with the to4z it makes 353kws at 15psi as soon as you wind the boost up fom 15 psi it stops making the power goes back wards its like its hitting a brick wall
afrs are 12
ignitons not breaking down was thinking the cams are to small or the standard plume and throttle bodys could be doing it any help would be appreciated thanks tim
engine specs
built bottom end
pored head
tomei type b springs and cams
new guides
800cc injectors
m and w cdi ignition
haltech e11v2 with 3 bar map
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i think iv got one pm a pic when i was wreck the r33 gtr just cant member which one the ecu it is
pm sent
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im after a attesa pro ecu of a r33 gtr if any one has one please let me no a price or if any one no were to get one from in sydney thanks
F50 Brembos
in For Sale (Private Car Parts and Accessories)
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bugger ow well