AnswerID: 296048 Submitted: Tuesday, Apr 01, 2008 at 21:27
awill4x4
replied:
Interestingly, what John's dyno sheets do show is just how restrictive the standard TD6 intercooler actually is. On the dyno run with the standard cooler the revs got to about about 2750 and the boost pressure fell in a hole suggesting the intercooler couldn't handle the air at the high/er boost levels.
The one I built however however the boost pressure curve evened out to be a flat as texas.
One other thing that John didn't mention is the dyno run with the modified cooler was done on a hot engine and intercooler with about 10 or so minutes of heat soak going into the intercooler before the dyno run. The standard intercooler was fitted and was cool before its run so the results would probably be even better.
A 10% gain in torque is nothing to be sneezed at though, and with lower EGT's there's room for playing with the fuel pump specs.
Regards Andrew.
Reply 3 of 8
FollowupID: 562144 Submitted:
Wednesday, Apr 02, 2008 at 08:29
Trevor R (QLD) posted:
To me, the figures only back up what the job looks like.......very nice indeed. As you said 10% increase in torque (probably over a broader range in revs) is quite impressive. There definatly is room to move with both boost and pump if you are running lower EGT's. I have been running 14psi (measured at the inlet manifold) for 150 000km with no side effects and now have 352 000km on the clock, so if it is going to show any side effects it should be showing on my older donk I would think. Especially considering I use all my neddies all the time hehehehe (why have em if you don't use em hey?).
Love your work Andrew, very jealous John.
Trevor.
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