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recently fitted rev2 turbo into a rev4 shell and dont seem to get any boost iv fitted a boost guage and it is not giving any boost readings the turbo propeller shaft spins freely and you can hear it spouling up. also iv got a hight idle when warmed up its about 1500 rpm and the car is doing around 15 mpg anyone have any ideas how i can solve this as at the moment its giving the same performance as the NA
Last edited by stedixon on 11/01/14 19:46, edited 1 time in total.
Why don't you put pics up just encase, do you have a boost leak by any chance?
Mr2 G limited (gt-s engine) broken but fun Mr2 uk 156 bhp - in bits Mr2 gt 170bhp - with the parents http://mr2turbo.wordpress.com/ If its broken hit it with a hammer if its still broken get a bigger hammer
Stock cat doesn't have wastegate fouling issues.
One way to tell is if the exhaust is loud, if the wastegate is closed it muffles it, hence louder on boost.
Have a look underneath and see if the rod is connected.
Rev1&2 dislike any leaks, so it'd idle odd and if enough to boost leak to not feel any boost it would really bog down on throttle input and possibly stall.
What bov do you have? Is it recirculated? If so could be recirculating air.
I guess your turbo is whistling away on throttle demand?
yep turbo is very whistly lol an iv changed to stock recirc valve i did have atmospheric thing on but it bogged down loads through gear change. another issue is the cooling tower is gargling when its been for a drive iv had head gasket checket incase its letting microcarbons in the coolent but that is fine iv also changed thermo, guage stays how it should do you have any idea why it would gargle under pressure
I'd bleed the coolant sydtem and change the pressurr cap and see how it is.
Does the bov have its vtv?
You'd get little to no turbo noise if the wastegate was open fully, certainly would be laggy if any boost at all
vtv ? i do feel aslight bit of turbo but it soon runs out of puff and just dissapears recirc valve makes a little hiss on lift off which i think is normal, so do you think waistgate is working properly? is there any known cases where interclr has been blocked
If the intercooler was blocked it wouldn't run, if it was blocked cooling to the ic it would be a drop in torque on boost.
The vtv is the vacuum transmitting valve to operate the stock bov properly or else it doesn't really work.
Sounds like its not a wastegate issue
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recently fitted rev2 turbo into a rev4 shell and dont seem to get any boost iv fitted a boost guage and it is not giving any boost readings the turbo propeller shaft spins freely and you can hear it spouling up. also iv got a hight idle when warmed up its about 1500 rpm and the car is doing around 15 mpg 
anyone have any ideas how i can solve this as at the moment its giving the same performance as the NA 
