Build Silver Bullet - BJ74 Tough Offroad all rounder buildup
- Thread starter Hulsty
- Start date
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What turbo is that? 
- Thread starter
- #205
It's a modified ct26 see link previous page. Got it on today, no changes to my boost tee and it went straight to 30psi old turbo must have been at its limit pushing 21.5psi. Took my boost tee off it the supplied wastegate limits it to about 23psi.
- Thread starter
- #206
Its on and working well!! I had problems with the provided wastegate actuator, which I ditched after the internals broke, now using a modified standard toyota actuator. First impressions, bolt it on, no mods to anything or to my boost tee it hit 30psi on the run up the hill near home. Old turbo must have been at its limit pushing 21.5psi. After some mucking around for a day or so with wastegate actuators and the boost tee I now have boost set to 23psi.
Response is MUCH better, old turbo used to give me 21.5psi at ~3200rpm the new one from Graeme makes 23psi at ~2300rpm and holds it all the way. EGT's are lower under acceleration, 0-100km/h I used to reach ~650c pre turbo, now I am stuggling to get past 600c. I am not sure but I think I might have reached the maximum fuel output from the pump, I have wound the maximum fuel screw in a further ~1.5 turns and noticed little difference to EGT's if any at all.
I am looking at having the car dyno tuned where the turner can explore other adjustments on the pump etc.
Driving during the day I do not notice any smoke behind the car, at night I can see smoke in the headlights of cars following me.
Good stuff mate! looks bloody cold down your way, bugger that!
- Joined
- Oct 15, 2005
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- 1,205
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- Malaysia, Kuala Lumpur
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- www.geckoadventure.net
Damn competition hahaha
THat sounds awesome so they turned it into a 7M turbo??? increased the vanes on the input and the exhaust?
Fuel pump needs to be modified or change it to 14B-T pump its rotary.
THat sounds awesome so they turned it into a 7M turbo??? increased the vanes on the input and the exhaust?
Fuel pump needs to be modified or change it to 14B-T pump its rotary.
- Thread starter
- #213
Compared to my old turbo the exhaust wheel looks visually the same from the outside, the housing is machined different tough. The front cover is machined and with a different wheel, my old turbo had 7 vanes.
I'm going to inquire about pump mods.
I'm going to inquire about pump mods.
- Thread starter
- #214
Using a vac guage, last night at 3000rpm 20psi boost I could not see any measurable vacuum between the turbo and the air filter.
- Thread starter
- #217
Was supposed to go out racing on the weekend, I was the pit crew for my mates, but they had issues with the permits and we couldnt race. Silly thing is though we could do the exact same tracks, just without stop watches. So it turned into a "free" drive and I was able to take my car out. Here are a couple of pics.
Wow! Really heavy stuffs machines. 
Good,
Good,
- Thread starter
- #220
