l28stockecukingofdyno340p Posted January 14, 2015 Share Posted January 14, 2015 i have the dyno copy if somebody don´t believe me. Quote Link to comment Share on other sites More sharing options...
mildsquare Posted January 20, 2015 Share Posted January 20, 2015 Bone stock L28et sourced from an 83 zxt auto with stock rebuilt t3 turbo and stock turbo manifoldE1280 DistributorL28E distributor shaftSanyo Kiki Intake manifoldSany Kiki 45mm Side draft carbureators x 3 with all the turbo bits from sk/Oer. HKS type 1 surge tankToyota supra same sided intercooler from cx racingJDm spec brand intercooler pipingMsd 6btmAirtex fuel pump forgot the part numberMsa down pipe to 2.5in exhaust all the way back. still need to do the 3in exhaust but more important non car stuff had to be taken care of. Damn those non car things lol. Quote Link to comment Share on other sites More sharing options...
area51 Posted March 8, 2019 Share Posted March 8, 2019 1977 280z rebuilding a 280zx turbo engine, not using the turbo. - Bored .30 over with ITM Flat top pistons - Polished and balanced crank - Balanced pistons and rods - going to use turbo injectors - Planning on a larger throttle body (Suggestions?) - P90 head totally ported and polished with new rockers and springs springs blah blah blah - Stage 2 Isky cam - Standard head gasket - Stock ECU, MIght need to upgrade, have to see what happens - Cold air intake My machinist says I should have no problem making 200hp to the tires. I have my doubts, but I am no expert. I would really like to hear everyone thoughts or predictions. The overall car plan is for it to be a spirited weekend reliable driver. - Quote Link to comment Share on other sites More sharing options...
Gollum Posted March 8, 2019 Share Posted March 8, 2019 52 minutes ago, area51 said: My machinist says I should have no problem making 200hp to the tires. I have my doubts, but I am no expert. I would really like to hear everyone thoughts or predictions. The overall car plan is for it to be a spirited weekend reliable driver. Shouldn't be a problem at all. MOST people making 200whp on factory longblocks without issue. But you'll likely end up wanting to ditch the factory EFI. You've modified the top end enough that the factory curve won't work well at all, and most people don't have the patience/interest in learning how to hack the factory EFI and retune it. Once you've got a good tune, whatever your choice there, you should be able to make 200whp on about 8-10psi without issue considering the top end improvements. As far as "limits", your limit will be detonation for a given boost/fuel/tune combo. A factory bottom end will hold 400hp all day as long as there's no overheating and/or detonation issues. So as long as the tune's good, the bottom end is pretty reliable. You might choose to just always fill with 110 octane and run a large radiator. You might choose to do some common cooling mods to improve rear cylinder temps. You might opt for a fancy ECU with per-cylinder trimming so you can keep detonation prone cylinders a bit softer. Everyone always asks the famous "how do I make 300hp with a L28ET?", and the answer always boils down to "add boost, tune well". These things won't explode in a fit of rage because of a power/torque level though. It's generally large amounts of abuse on a bad tune, using pump gas and lots of boost, or revving the nuts off of it when you didn't build it for that, which generally do them in. Handle the tuning aspect, and you can make as much power as you venture into solving secondary issues for (which generally all boil down to heat management). Quote Link to comment Share on other sites More sharing options...
area51 Posted March 10, 2019 Share Posted March 10, 2019 Thank you for your response. I won't be using a turbo on the engine. I was still hoping to 200hp. The car is super fun stock. I do not want to compromise reliability, just looking for a bit more ump. Think i can make it? Quote Link to comment Share on other sites More sharing options...
HuD 91gt Posted March 10, 2019 Share Posted March 10, 2019 (edited) Easily do-able, but send the head to someone with a proven combination of headwork and camshaft. Edited March 10, 2019 by HuD 91gt Quote Link to comment Share on other sites More sharing options...
area51 Posted March 10, 2019 Share Posted March 10, 2019 Thanks you hud. Good news. It should be a fun ride once it goes back together. Quote Link to comment Share on other sites More sharing options...
Enginerd81 Posted August 25, 2019 Share Posted August 25, 2019 (edited) Junkyard Stock L28ET Stock T3 Turbo Megasquirt 2 440cc Supra injectors Evo 8 Intercooler DSM blow off valve 3" Exhaust MSD 2225 fuel pump 240SX throttlebody 13 PSI at 3200 rpm trailing off to 10 psi by redline 260 hp/300 ft lbs @ 11.5:1 AFR 93 Octane on a Dynojet Mobile (no tuning done just pulls at a car show) I Edited August 25, 2019 by Enginerd81 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.