SleeperZ

How are your plugs and wires? Or your coil? It sounds a lot like an ignition problem I had where it was a pig, and took forever to rev up under load. I had some bad plug wires.

You may have the wastegate actuator holding the wastegate open -- that would account for slow boost buildup.

"i know this can never happen" Oh it can happen alright. Why do you not think so?

Not quite enough hood to be a Z, but nice looking car.

Oh yeah! Just a few minor line tweeks and it'd be a wicked Z.

I like diesel Benzs.

On the off-chance there is the demand and you have the energy to ship enough stuff to fill a shipping container, I'm looking for a half-cut Toyota with a 2LT diesel engine.

You can plumb the oil from a "T" in the oil pressure sender. The water cooling isn't difficult with the right fittings, just run it in series with the hard line from the pump return that feeds the throttle body and air bypass valve.

Those Honda people really like to push higher compression ratios. The more modern heads have reduced detonation I suppose, but they like to boost factory engines as well. Just intercool it and use high octane fuel, and they are relatively safe I suppose. And they like to run them on the lean side as well, sometimes as high as 13:1, I'm not surprised they need to richen the mixture to keep a 10:1 compression engine alive, I bet the air-air intercooling just cannot keep the temperatures low enough.

Problem with centrifugal is you've got to design the install to make full boost at redline since it's directly geared to the crank. The airflow from the unit is proportional to the square root of the RPM, so you get only 25% of the airflow at half the redline RPM. This results in only a fraction of the boost until you get the engine wound up, and the effect is more pronounced on a high revving engine.

Very cool. I've seen that interface on DSMs that use OBD 1 computers. How does the PDA connect?

The '81 supposely didn't have a fuel cut-off at high rpm. It should plug right into the distributor, even though it had a CPS on the crank pulley, but don't quote me on that since the crank turns at twice the speed of the dizzy. I don't know of any real differences between the rest of them. I prefer the '86 turbo ECU as the later turbo units use an expensive O2 sensor, and the non-turbo units aren't curved for boost. The earlier turbo ones may work ok too. It's a much nicer conversion, I think you'd like getting away from the crappy flapper.

That excellent, I'm sure it feels like a new engine. Why does no one like the L20ET?

Let me guess....his super charger is a centrifugal unit. No other explanation for why his boost comes on so late. Sounds fun, I sure like how the turbos spool so quickly -- 400 ft-lbs is a lot of fun down low.

From the pictures, I would say the SU intake is closer to equal length than the 4bbl by quite a bit.

I think the 7M is a good choice. It has a bad rap from the head gasket thing, but they last and perform very well, better than than the L28ET for the money, and of course, parts are plentiful.

I'm surprised you were able to attach the flywheel to the crank with the spacer attached....before I knew about this, and tried to bolt it on, I was distressed that it didn't fit.

I called ARP, they are sending me another nut.

Gorgeous install, very nice. Congratulations on getting it together, I can't wait to hear how it does on the dyno.

Anyone seen this before? One nut of 14 was missing threads. Things were going smoothly swapping heads today (too smooth). Head and manifolds lifted off with only one thing I forgot to disconnect -- the turbo drain line, oops, twisted the crap out of that. The block cleaned up nicely, the studs all went on well, copper-coated the head gasket, new head dropped on snugly. Couldn't tighten anything down, I needed a deep-well 12mm socket, and all I had was the shallow. It should be OK sitting until I get the tool and a replacement nut. I guess I'll contact ARP. For $140, I expect 14 nuts with threads, not 13. Anyone dealt with this before?

That's an excellent implementation. I shall look for those rotors and calipes, as I already have the machined brackets. Thanks!