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Looking at your pic again, the oil return outlet on the turbo side should be more closer to vertical. There's more leeway on the hose angle after that.I haven’t posted here in awhile, but I got my CT26 Mamba installed. Does this look ok for the angle of the oil drain?
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Well it took a while, but I finally got around to dynoing my land rover again, to see how the 8.5cm twinscroll he221w performed on my 13bt, vs the single scroll 5.5cm he221w.
So originally this was going to be the "perfect" comparison with as few variables changed as possible. However it turned out the 5.5cm he221 runs a smaller compressor and turbine wheel than the 7cm variant which is compatible with the twinscroll turbine housing. I moved to a different part of the country, so it's on a different dyno, though this dyno was installed/setup by the people who run the Auckland shop where the earlier run was done, and is meant to read very similar. And final thing that ruins the accuracy of the comparison is that I just found that I'd previously installed the inlet manifold gasket upside down, and had been running with a small boost leak for most of this year. That's now fixed, but the the earlier dyno run was with that boost leak. In reality I don't think that would have harmed the figures too much based on seat of the pants performance difference, but that's opinion rather than fact...
Comparing the dyno runs is made annoying as the Auckland dyno converted the figures to flywheel numbers in the graph, and lists the rear wheel peaks at the bottom. The Palmy dyno only has rear wheel figures, but there is something wrong with their torque figures/plot. From reading up on this, the power figures are the most useful and accurate as long as the rpm/speed ratio is correct. The Palmy dyno set this the same as the Auckland shop, so this should be a fair comparison. It looks like the Auckland dyno displays torque derived from the power readings, whereas the Palmy dyno is possibly showing measured torque but there is a setting off somehow. The below figures I'm comparing are rear wheel kw, and torque derived from that. Definitely not ideal, but that's the data I got.
I thought the 8.5cm TS would have better legs than the 5.5cm SS, and hold the torque curve later into the rev range. However that doesn't seem to be the case, infact pretty much the opposite is true. The 5.5cm made peak torque at 2300rpm, the 8.5cm peaks at about 1800rpm, but drops off slow enough to still better the 5.5cm.
The 5.5cm made 95rwkw at 2500rpm, and holds that roughly till 3300/3400rpm. The 8.5cm is making 100rwkw at 2550rpm, and holds that till about 3100rpm.
At 1750rpm, the 5.5cm is around 320-330nm and 60ish kw. The 8.5cm is 420nm and 77kw, and that's also peak torque. The 5.5cm peak torque is 370nm.
I turned up the fuel by approx 10cc, and this gained another 10kw, and about 30nm (450nm @1750rpm, so should be easily over 500nm at the flywheel).
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I was recommended this one for my 1990 LC 1HDT. Opinions? (Sorry, I know very little about turbos) Thanks in advance!
https://www.shop.mambatek.com/TOYOT...r-497-674-GTX2867R-001-2413.htm?categoryId=-1
What are peoples thoughts on the new TD06SL turbos being sold by mamba and kinugawa?
I have an older mamba TD05-18g on my 1hd-fte. It was great on my old 1hd-t, but after i got a unichip on the FTE, and the newer mamba wg actuatoer with a 2 bar spring, i'm able to do 1.85bar from 2100 up to 2800rpm but seem to lose steam after that, going down to about 1.6. I'm quite sure the exhaust manifold pressure is very high, which has necessitated the 2 bar spring, as smaller ones would open on exhaust pressure alone regardless of boost control settings. It's still a great turbo, it just seems like the engine might be able to do more with a larger turbo.
I am not seeing any other negative effects of high exhaust pressure like high egts or the like. And am also considering the Kinugawa TD05-20g ball bearing one. Kinugawa sent me a 10% coupon and with their free shipping and no tax+duties their price becomes very competitive compared to other options for me here in denmark, where import duties and taxes are through the roof.
Ball bearing TD06:
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