Best Waste Gate For A T51 R Hks,

[campbell]

for all your supportive people that r saying that its bull shit i will post the graph tomorrow when i go down to the workshop....

[Freeman]

  51OWW said:

You'd wanna hope you got 590hp you crazy bastard haha.

His engine

holy shit

[campbell]

dyno_sheet.bmpsorry i lie 582 but when the boost problem is fixed should see more plus we havent touched the timing yet...

[BU5TER]

Awesome work, how about one showing boost thats all I really wanted to see

[campbell]

its funny no replies from the people that said it was bull shit.................

[blk180]

Its bs,

nar mate nice power but yer there sould be more in a 1000hp turbo

[R31Nismoid]

  campbell said:

its funny no replies from the people that said it was bull shit.................

those people dont sit on the net all day like some of us... they will return no doubt

patience

[kwazza11]

You get alot of keyboard commandos on forums, pay no attention to them.

nice power though, too bad about the massive lag, i thought my car was laggy! and i'd be getting a second oppinion on the whole wastegate too small idea...

[Noy]

nice figures bro can't wait to see it in action @ mini jam should silence some people

[Sydneykid]

  campbell said:

well first stage of tunning was carried out today, but apparently my 50mm trust wastegate is to small can anyone recommend somthing they have used on a hks t51r. what size or brand would be the best to use..

we only got 590 rear wheel hp on pump fuel no noz.

Assuming all is as it seems, and the quoted numbers are correct..............

The wastegate sizing formula

Airflow in lbs per minute = diameter of wastegate in mm X boost correction factor

The 50 mm wastegate is not too small for 582 rwhp and 1 bar.

The turbo is too big for for 582 rwhp and 1 bar.

I guess that's what happens when you use a turbo designed for 800 rwhp and 2 bar

So you have a choice, increase the power and boost, in which case the wastegate will be the right size.

Or use a more appropriately sized turbo, it's a waste at the moment.

You have the lag of an 900 bhp turbo with the power of of a 650 bhp turbo

cheers

Edited March 15, 2006 by Sydneykid

[campbell]

i think a noz shot should spool it up a bit quicker i have a 100 shot waiting to go in but with the wastegate i was told they cant control the boost through the wastegate thats y they said it was to small maybe their is somthing else wrong i am open to sugestion as i dont no everything about boost and wastegates...

[BU5TER]

if you post a graph showing boost we may be able to help, how bad does it creep?

[campbell]

i dont have one showing boost sorry but i do remember looking at it on the dyno computer it just went up and kept going didnt level out at all they said the engine limiter was 8500 revs and the turbo hadnt reached full power the line kept going straight up.....

[Swiper the Fox]

  campbell said:

i dont have one showing boost sorry but i do remember looking at it on the dyno computer it just went up and kept going didnt level out at all they said the engine limiter was 8500 revs and the turbo hadnt reached full power the line kept going straight up.....

Id kindly ask your tuner to print off a boost and power vs rpm graph and that may shed some light on whether the wastegate is the problem. I suggest a smaller turbo if your not going to boost it harder as the turbo has not even reached is efficiency range yet...HKS state 1.4-2.0 bar for this turbo.

[Beer Baron]

if that is the case there is a big problem. if boost is constantly climbing (which having too small a wastegate would cause) then why is it only reaching 1 bar at 9000rpm? that is insane lag.

[Swiper the Fox]

  campbell said:

the problem is the boost is still climbing so maybe their is a hole in the diaphram i tried reversing the solinoid it went straight to 2 bar ...

so the boost was still climbing...to what...1bar... then they backed off ??

your power graph does not appear that they backed off

did you build this thing to drag...or potter around car parks

i suggest you get another opinion...take the car to Mark Jacobsen, he's experienced with these set-up's

something here does not add up!!

[T04GTR]

well, is it controling boost? like not boost creaping up top?

thats the bottom line, who cares about the size of the turbo...

if anything the biger the turbine the smaller the gate needed. as more gass needs to pass thru the turbo to make boost...

ahh, woops. what pressure is it stable at?

yes its too small get e bigger one. period. perhaps a hks one thats meant to go with the kit

[campbell]

have we got mark jacobsons number ,,,, also if their was a hole in the diaphram would that cause the boost to climb.

[180bfj20det]

jEESH?

8500rpm from an rb25.....what mods you have to your engine?

[Swiper the Fox]

  campbell said:

have we got mark jacobsons number ,,,, also if their was a hole in the diaphram would that cause the boost to climb.

yes, i have Marks number...PM me your mobile and ill forward it to him.

If there was a hole in the diaphram you would have no boost control...as you swapped the hoses over and got 2 bar tells me its ok.

the boost to climb to what?? 1 bar.

Edited March 14, 2006 by DiRTgarage