and the car still made 305 bhp....
was very sluggish off boost though as you can imagine!

are you sûre your throtle body opens at 85 degrees? Your map sensor is in good condition?

are you sûre your throtle body opens at 85 degrees? Your map sensor is in good condition?

are you sûre your throtle body opens at 85 degrees? Your map sensor is in good condition?

I think throttle position is a red herring. I have seen from data logging maximum boost with less than 75 degrees of throttle opening on acceleration.

My bet is on the turbo - probably a mis-match between the turbine wheel and the turbine housing.

well i hope your guess is right!!
Flea says throttle is spot on and map sensor is working correctly!!

nick

finally some good news..... Well not good as it will cost more dough but we know what it is and its not the engine..... It's deffo the turbo!
bolted the standard one on and it spooled straight upto 1.8 bar.....

leightons not had chance to have a proper look at turbo but he has a hunch Compressor wheel may also be undersized.... Witch has pissed me off a little as i feel i should just take it back to my turbo guy.... I know what will happen tho, he'll just blame it on the exhaust housing being swapped over.... And i can't be arsed with all that.... Don't know if it is compressor for deffo yet tho!!

anyways leighton says he knows a couple of turbo guys who will be able to sort it out!
So we can see some light at the end of the tunnel..... And WHAT a tunnel!!

nick

Sorry to hear that, but see post #1268583 - I think taking it to a turbo re-build expert sooner would have saved you some money.....

Alas! lol Glad to hear you have found the cause.

i know i know.... Well you live and learn.....
leighton has asked me for my full spec so he can spec the turbo accordingly.... I'm hoping it will be just a wheel change as bearings and bearing housing is all brand new!!
I think if that turbo would have been what it was meant to be then we would of easily got in excess of 350.... More like 375-400 with sufficient boost.... I believe my engine build/spec is easily capable of 400 so lets get a properly spec'd turbo and get another 16vt in the 400 bhp club.... ......... That would be nice!!

nick

Nick, I honestly thought you would have cracked this by the time I was back from holiday, but it seems there was still more issues, but you have perceived and found the problem. Fingers crossed it's straight forward from here on in If not, I will be changing your signature

lol.....

yeah fingers crossed we're on the home run now.....
to be honest although its obviously gonna more dough i'm sort of glad we've had this issue as i now know that "other" problems have been found and more importantly sorted while fleas been all over the engine to try and find this boost issue....

for example when cam cover was removed arogue bolt was found down by the belts... Flea said how it hadn't fouled the cambelt he will never know..??

also cam timing was whey out.... And this was only discovered due to looking for the source of the boost issues...

loads of other small things have also been sorted..... Team Flea have been to hell and back trying to sort my car..... Many many many Thanks.....

nick

quick update.....

waste gate penny not seating properly on dodgy turbo obviously causing the boost leak... It also turns out my 'new' turbo has pretty worn bearings... Won't be using turbo guy again!!

So Fleas given turbo to a guy who he knows and who has diagnosed these faults.....
so turbo needs refurb basically!
i've had to decide on whether to stick with T34 or for Extra 100ish quid, upgrade to T38 wheel..... No brainer really!

also need to uprate clutch as mine has been slipping at 1.2 bar on the old t34!!

its gonna be a few weeks yet as i wanna sort the main man some wedge out before going ahead with refurb and clutch....

SO you might want to Rewise your BHP Guess's please.....
roll on next spring and summer and some dry roads ...... And possibly a few 1/4 miles...

nick

fingers crossed for you nick!

what is it with 16vt owners.. ALWAYS drama

And you have never had any drama with yours trying to get power back to standard have you?

Nick am I meant to be charging you by the week for renting my test turbo

Seriously though, it's great to finally hear why it didn't perform the 1st time round, there's nothing more frustrating then building a tuned car and it all goes to shit!

Onwards and upwards mate

wow.. your a dick!! just think i come to help you out putting your back on the road and this is the thanks i get!!!!

if i had a ping pong ball....

What's happening now nick?

Has he given up??

Not given up?? Came very close tho over xmas... Seriously considered selling/breaking over xmas as finances have taken a nose dive as explained in the "whats happened to Nick d" thread..

spoke to leighton today and its been decided that gonna get turbo (t34)just completely refurbed.... So 400 horses are on hold for 6-12 months.... As i'm also gonna need a clutch as mine is pretty shite!
so leighton will map it to where he can before clutch slips, he said that he can do something "clever" with the map so that the torque doesn't overwelm the clutch at say 4000 revs (where it will really kicks hard normally).... Think he said boost will climb more progressively.... More like a super charger he said!?..... Not promising anything tho as my clutch is in pretty poor shape!!
shame as that is what i love most about my 16v and journal bearing turbo.... The huge kick at peak boost around 4K....

i guess it will be a different drive all together?? Peak torque will be much further up the rev range instead of between 3800-4200 i guess?
if i could find a really cheap second hand clutch that will be able to hold my torque i'd prob shell out the extra and get team flea to fit it .... Anyone selling one CHEAP!!

So i may get to drive my car spring/summer after not having it for around 2 years!! Wahoo!!

nick

Nick,
just love the optimism, but you need to make sure the drivetrain can handle the power and the brakes can stop her before you employ the horses. If you can't use the power and drive/stop the car then there is no point horseing it....

Sorry to be a wet blanket, but IMO these come first. I'm modding my Scottie for a few extra ponies having already sorted the brakes etc.,

what do you mean by drive train?? If your referring to the clutch it will deffo be changed i'm just totally skint after alot of bad luck over xmas.... I just wann get car back and DRIVE IT!!... And my brakes are upgraded... Not as far as i'd like but have 20vt brembos with pads that cost well over 100 quid and high pressure brake lines!

nick

Quick update peeps.....

Car is STILL with Leighton, and will be having new clutch fitted next week sometime, it will then be MOT'd and hopefully be mapped and back in my possession within 2-3 weeks, ready for summer!
So with new clutch in place we should have a solid platform for some monster low down torque...... 400 ft lb should do!!

Nick

I'll believe it when I see it

Who is this guy?

I think I remember he had a 16vt...

But I just can't remember him...

Very funny boys!! Begbie you can hardly comment, think you are stil the proud owner of the "longest build title" although saying that I bet this is coming pretty close, I don't know if it coming upto 2 or 3 years???? Lol!

Nick

OMG..... Car was last mapped 24th July '2009'!
I then took it off the road about 2 months later!!
It's been a while!

they way things are going Nick you will be cathing Begbie up soon

saying that, i saw your car at Flea's place... i think your rear wheels need spacing further out

Lol! Yes the inside lip on the rear arches had to be ground off to accommodate those wheels...... You're only jealous of my extra "girth".... Lol

Nick