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Turbo car with a problem lol also a couple of turbo question 

 

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 Post subject: Turbo car with a problem lol also a couple of turbo question
Posted: Sat Feb 05, 2011 6:32 pm 
Stock as a Rock
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Age: 27

Posts: 130

Joined: 6th Jan 2008

Ride: 2 XF's, XE, EA Ghia

Location: Adelaide
SA, Australia

OK guys yet again i have another problem lol when driving in second its really hard for the car to go over 4200rpm when boosting it kinda just hits a brick wall... it does the same in third but at 3000rpm it struggles to get passed it unless u back off to about quarter throttle then it can rev to about 5000rpm easy lol was thinking that my FMU isn't giving it enough fuel pressure? or my injectors are maxing out? its got a Bosch 044 mounted in-tank so i know that the fuel pump isn't the problem lol also just wondering could i get away with 24lb injectors? cos i got told that the stocks one are 18lb or 19lb an they max out at 180rwkw? was thinking that the 24lbs would get me to my goal of 200rwkw. An another problem is im having weird over boosting problems, with the spring thats in the wastegate now it couldn't be more than a 5psi spring. but i went an bought a 7psi spring just to be sure but it still likes to boost to about 10-12psi. now i know that fuel cut is at 10psi so this might also be the reason for my other problem, its only a 38mm wastegate do i need to buy a 50mm wastegate or something bigger? or should i take the manifold off an work on the wastegate hole to bore it out a bit? the car is an 3.9L EB manual. any help will be great :) thanks
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 Post subject: Re: Turbo car with a problem lol also a couple of turbo question
Posted: Sat Feb 05, 2011 8:00 pm 
Getting Side Ways
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Age: 32

Posts: 1112

Joined: 18th Jan 2005

Location: MAFFRA
VIC, Australia

do you have your wastegate plumbed up correctly?

 

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97 el xr6,5 speed short shifter,sequential scoop,no arial,freshly resprayed,low on 17's,3 inch zorst,stainless hi flo cat,snort stage 3 stainless manifold,garrett t04e,front mount cooler,wolf 3d ecu,seimens 760cc injectors,walbro fuel pump

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 Post subject: Re: Turbo car with a problem lol also a couple of turbo question
Posted: Sat Feb 05, 2011 8:47 pm 
Stock as a Rock
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Age: 27

Posts: 130

Joined: 6th Jan 2008

Ride: 2 XF's, XE, EA Ghia

Location: Adelaide
SA, Australia

its connected to the manifold properly but i dont have an lines or fitting connected to the wastegate if that makes sense. An its venting to the atmosphere
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 Post subject: Re: Turbo car with a problem lol also a couple of turbo question
Posted: Sun Feb 06, 2011 11:33 am 
Getting Side Ways
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Age: 32

Posts: 1112

Joined: 18th Jan 2005

Location: MAFFRA
VIC, Australia

you need some vacuum to the wastegate

 

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97 el xr6,5 speed short shifter,sequential scoop,no arial,freshly resprayed,low on 17's,3 inch zorst,stainless hi flo cat,snort stage 3 stainless manifold,garrett t04e,front mount cooler,wolf 3d ecu,seimens 760cc injectors,walbro fuel pump

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 Post subject: Re: Turbo car with a problem lol also a couple of turbo question
Posted: Sun Feb 06, 2011 12:03 pm 
Stock as a Rock
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Age: 27

Posts: 130

Joined: 6th Jan 2008

Ride: 2 XF's, XE, EA Ghia

Location: Adelaide
SA, Australia

banjo fitting in the top of the wastegate then connected to a vac line?
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 Post subject: Re: Turbo car with a problem lol also a couple of turbo question
Posted: Tue Feb 08, 2011 11:53 pm 
Getting Side Ways
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Age: 64

Posts: 3552

Joined: 7th Nov 2004

Gallery: 4 images

Power: 482 rwkw

Location: Penrith
NSW, Australia

Save a buy an ECU to run / tune engine.. EMS [Stinger] have low cost ECU's which can be fitted and tuned for around $1500 or so...
Over boost is a sign of bad wastegate design in pipe work..
Tune ??..
Retarded timing makes latter ignition so fuel is burnt in exhaust / turbine which spools turbo more so...

 

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As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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 Post subject: Re: Turbo car with a problem lol also a couple of turbo question
Posted: Fri Mar 18, 2011 5:56 pm 
Tyre Shredder
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Age: 32

Posts: 324

Joined: 23rd Apr 2006

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Ride: EF II TickMont, BA XR6T

Location: Adelaide - Whyalla
SA, Australia

i had this sort of issue when i went from the stock cam to a 977b in my ef manual turbo
tooo much exhaust for the turbo to waste, hit the 10 psi cut off real quick, put it back to the stock cam and it was fine again

 

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Current Ride - Phantom BA XR6 Turbo
EF II Fairmont Tickford Optioned, J3 Chip, Converted To 5 Speed
R.I.P. Nelly .... My NL V8 Fairlane..... Totaled by a kombivan

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 Post subject: Re: Turbo car with a problem lol also a couple of turbo question
Posted: Sun Mar 20, 2011 10:36 am 
Getting Side Ways
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Age: 64

Posts: 3552

Joined: 7th Nov 2004

Gallery: 4 images

Power: 482 rwkw

Location: Penrith
NSW, Australia

Sign off inefficient wastegate flow in either control of gate or in the manifolding...
A small turbine housing can enhance these issues also...

 

_________________

As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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