Search the Community
Showing results for tags 'horsepower'.
Found 3 results
Went to the Dyno today expecting to do 5 pulls and get a horsepower number. I am planning a significant amount of upgrades soon so I wanted a baseline. This place lets you run the car yourself on the dyno. I had never done something like this before, so my first run I stopped at 5500 RPM. The second run I went all the way to 6200 RPM. Better numbers, but we thought there was an air leak. Upon closer inspection, we saw coolant going everywhere! Apparently a weird old T-fitting on coolant lines had failed. It killed my dyno session. Luckily, the shop let me replace the T-fitting there myself using their equipment and I was able to head home. But not without this interesting dyno chart! This is a 99% stock L28ET. Swapped by previous owner around 2004. The only thing not stock is that the air intake is moved in front of the radiator and there is an oil cooler. Dyno Chart Peak Power: 148.86 hp at ~5700 RPM - MEGA POWER!!! Peak Torque: 161.37 ft/lbs at ~4400 RPM EDIT: Done with 1978 280z 5-speed transmission and rear diff in 3rd gear. I'm gonna be honest - I thought there was more power under there lol. But I'm not complaining! It certainly feels like it with how light this car is. But what the heck is with everything taking a dump @5k? Action Shots: Coolant Pouring!! The busted T-fitting - wtf is this thing? Fresh T-fitting Installed! My buddy who was nice enough to come by and help!
Hi all, This is my first post on this forum. I have a 1970 240z that I am currently working. I am picking up an L28et as well as a 5 speed transmission from a 1983 280zx. I am looking to get a good amount of power out of this engine (around 450+ whp). After hours of research I have come up with the following L28et P90 head- port and polish dewebbed intake manifold JE forged flat top pistons (raise compression to 8:5:1) Injector 550cc Holset hx35 turbo Fuel rail? Depends what's out there Stand alone megasquirt ecu Differential 3.9 or 4.11 r180 3" exhaust I know I am missing a few things but I just wanted to get your guys input. I am new to these engines so please bear with me. Thanks.
Ok, my dad and I are about to put together my motor for my 73 240z and we have no clue how much power this motor will make. The head is rebuilt to stock its a 1973 E88 head. We have the Z Car Source master rebuild kit with .040 over flat top pistons, the pistons dont work with the head so we are having valve reliefs cut...we found this issue once we had the pistons and most internal in, check the clearance with #1 at TDC and the valves are coming in contact with the piston. Mods are; over bore(.040), header and AZC 4 barrel manifold/Holley 390. Any guess on horsepower at the crank would be greatly apreciated, I am geussing around 175hp at the crank. Thanks for any help.