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Turbo upgrade

Getting the best performance from your Isuzu, the in's and out's

Re: Turbo upgrade

Postby awhitbread » Tue Sep 05, 2017 11:36 pm

Im pretty sure it was the 6 blade compressor, and the turbine was 9 blades not 12. I don't have a boost gauge yet or an EGT gauge, though you can simply hear it making boost! Before the IHI RHB5 would not start boosting till around 1900-2000 and probably at full boost at around 2200-2300, whereas now I can hear it boosting hard at around 1500 rpm. Pretty sure the clutch is slipping a little bit though in 4th when you put your foot down, will change it at xmas time as I have a heavy duty Exedy one sitting in the shed ready to go. I cannot wait to fit a 2.5" turbo back exhaust and get it properly tuned on the dyno, I think it should be a fair bit higher than the standard 110 hp. With regards to the air filter setup, before I had the K&N sitting inside the old air filter enclosure (sideways) which was fed cold air through the pipe in the bull bar, but now the turbo was a little further forward and it would not fit so I just have the bare K&N pod exposed now, its still got cold air feeding the area but its not enclosed. Probably wont do anything about that until close to xmas, hopefully then I will be fitting the exhaust aswell.


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awhitbread
Isuzu Baby
 
Posts: 6
Joined: Sun Jun 18, 2017 10:00 pm
Age: 38
Country: Australia
City: Perth
Vehicle: TF 1995 4JB1T

Re: Turbo upgrade

Postby awhitbread » Mon Sep 18, 2017 2:12 am

Well, I got the 2.5" mandrel bent exhaust and dump pipe fitted. All I can say is toyota me, I need to change the clutch! Cannot put it flat in 3rd or 4th because of slip, it pulls very good now for a 1995 duelcab, hopefully fit clutch over Christmas and get it dynoed. It would have to be 150 hp++ now.

(I had to moderate one word. Remember this is a family and work friendly forum)
awhitbread
Isuzu Baby
 
Posts: 6
Joined: Sun Jun 18, 2017 10:00 pm
Age: 38
Country: Australia
City: Perth
Vehicle: TF 1995 4JB1T

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