Leaderboard

I've sold 22 heads.

Today this post is officially 10 years old. I was trying to think of something witty to say but I'm drawing a blank. Being 65 will do that to you sometimes. Anyway here's wonderwall.

Just got back from a frustrating dyno session - just seems like it's been one dumb thing after another for the past couple of weeks - pretty much right after I scheduled the dyno session...First I had the dreaded coolant leak under the dash. Had to order replacement hoses and wait - just got it all back together last night and it still leaked, looks like probably the valve was leaking too. So I just pulled the heater hoses and capped the block outlets for now. Got to the dyno this morning and my laptop wouldn't connect to the engine controller - spent ~20 minutes trying to debug, finally reinstalled the serial port drivers and restarted and it worked. During the second and third pulls, the serial port started flaking out again, and apparently caused the controller to stutter. Had to shut everything down and reboot, and then that problem went away. Fouth pull was then very strong and we attempted some fine tuning, but during the fifth pull it appeared that the boost controller thought I was overboosting and cut boost. Oh, and a small fireball around the intake gasket. . So at this point it appeared that possibly the intake/exhaust manifold gasket was suspect - it ran fine but I didn't want to push any farther today. So, a lot of f-ing around and two good pulls... So here it is... 694hp/ 633lb-ft torque at the wheels on a Dynojet 248C... The main new things on the car were: GT4294R with a Mamba billet extended tip compressor wheel a new proper Weldon 2025A pump Three holley hydramat pickups plumbed in parallel MOAR BOOST!!! 35PSI on E85 My son took some videos, I'll try to get a link up on youtube shortly... Despite all the hassles, I'm pretty happy with the results!

It has been quite a while since I posted on hybridZ.. good to be back.. 1- My Z is a 77 with a L28ET 2- Motor is a stock bore L28ET with JE pistons. I am running NA-a cam , ported intake manifold with the 65mm Weber TB and I ported ever living crap out of my exhaust manifold. 3- peak power was 385 to the wheels at 17-18psi and expect around 400 at 20psi 4- peak torque @ 390 to the wheels at same boost pressure and expect a little over at 20psi. 5- I am running Megasquirt 1 V3. 440CC MK3 supra injectors with a Pallnet fuel rail. Garrett T3/T4 50 trim turbo. 3" turbo back exhaust and 12X24X3 front mount Intercooler. Tial 38MM external gate. I modified the stock exhaust manifold and welded a uptube at the turbo collector to bring the gate to where I wanted it. 6- Porting the exhaust manifold helped the HP up top a good bit.. Also with the NA-A cam I am able to make power all the way to 6500 and still have plenty of power down low. I get 20psi right around 3Krpms, Port matching the exhaust housing of the turbo and the intake manifold helped as well..