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Are ls1's tougher than the average bear? I am in a discussion on another site, between the 6g72 twin-turbo engine (3000gt vr4 and stealth twin-turbo) and the ls1, relating to issues as spinning bearings, oil pump problems, anything that is a known issue with the ls1. Thanks for the replies. |
oil cunsumption, piston slap, weak rod bolts and a T-56 tranny that loves to break rearends. Other than that, perfect!!!! |
ive owned many vehicles and put them all through some hell but my ls1 ta has held up better than any next was a lt1 ta. i think there a great engine. |
they were hand assembled by god! Need I say more. |
Originally Posted by Robinator they were hand assembled by god! Need I say more. |
definitely sig worthy :) |
lmao, how about just bolt-ons with no nos, how do they generally hold up, and what does go on them when they do. 6g72's spin bearings all the time on basic performance upgrades. |
guess that is what you get for a mitshi pos. I vote ls1 is a way hardier motor, I mean the stock crank can take a ton of abuse like 300 shot and 12 psi of boost. I doubt you ever see a stealth hold together with those mods. |
Originally Posted by daryl2cb@yahoo.com guess that is what you get for a mitshi pos. I vote ls1 is a way hardier motor, I mean the stock crank can take a ton of abuse like 300 shot and 12 psi of boost. I doubt you ever see a stealth hold together with those mods. Thats the kind of info i need to use in my argument, anyone else. Daryl, got any hard facts, #'s, to throw around, besides 300 shot and 12 psi. How long do you think stock motor would hold running those conditions, or how about 8psi and a 150 shot? |
My personal opinion is this 150 shot all day for 150k miles as long as two conditions are met. 1. Don't over rev the motor stay around 6200 rpm's max on stock bolts. Going more is usually ok but I compare it to walking thin ice. 2. Keep the tune right. If you don't run it lean you can't break a ring land. Same basically applies for forced induction |
well if you want an article, car craft made right around 700hp from a stock bottom end on a 200 shot, thats very inpressive from such a "small" motor with stock internals |
did u mention their cars are ricers |
what is the engine layout of your friends twin turbo? 4cyl, 6cyl, straight, v-config? If its got a straint 6, theyre pretty tough. Ive got a strait six in my jeep and its got almost 250,000 miles with ZERO problems other than a busted water pump a few years back. There are tons of considerations, but you have to figure a strait 6 with 6 cylinders and 7 main bearings, while usually smaller and with less power potential, will generally be more durable that a v-8 with only 5 main bearings, all else being equal. Just a thought. But who cares which is tougher, the v8 may last 200,000 miles, and the strait 6 may last 300,000. But neither one of you will drive the cars for that long. Whos faster between stoplights? thats all I care about. |
One of the sponsers I believe had 800hp on the stock LS1 crank. Bad cast pistons, rod bolts only go to 6300, shitty heads that only flow in the 220's :lol: Dam motor kills the clutch and the dam trans kills the rear which kills your dam wallet which is a dam shame they were hand assembled by god! Need I say more. |
Speed inc has a 370 cube shortblock with a stock crank in one of their shop cars. It has put down 995 RWHP and ran 8.93@153 mph. This is taken from their site. http://www.ls1speed.com/shopcar.cfm ITS COMPLETELY STREETABLE TOO! Engine- 370c.i. LS1 motor, iron block, stock crank, eagle connectiing rods, and diamond pistons. Out of the box AFR 225 heads. 236/242 112lsa camshaft. Driveline-TH400, TCT 4000 stall converter, 9" rear end w/ 3.42 gear. Chassis/brakes- BMR K-member, BMR Extreme torque arm, BMR square subframe connectors, BMR Extreme rear sway bar, Strange front drag brakes, Strange front coilovers, Wilwood rear brakes, QA1 rear shocks. Engine management/fuel system- Big Stuff 3, Speed Inc Harness for factory gauge cluster, Innovative Boost Controller, 96lb injectors, custom fuel system using twin Bosch 420L pumps. Turbo system- Custom System using a midframe Innovative 88mm Turbo. Misc- GM Truck Ignition Coils, Radiator relocation Performance/driveability- 995 RWHP / 8.93@153mph. Driven to many cruise nights and around town. |
Besides pistons, the entire stock engine is pretty stout. You do have the occasional person with slap & consumption. I think compared to other engines it is "tougher than average". |
If you wanna make your point in the arguement ask him how long his twin turbo motor would last at 350 horsepower. Then when he replies with his answer tell him thats what an ls1 makes stock and that it'll probably keep running to hell freezes over if maintained right. |
Its real simple in my mind: LS1's have made over 720HP with a completely STOCK bottom end. Who can beat that!? |
Originally Posted by MavrikTA Its real simple in my mind: LS1's have made over 720HP with a completely STOCK bottom end. Who can beat that!? |
Originally Posted by UMD_Jesse what is the engine layout of your friends twin turbo? 4cyl, 6cyl, straight, v-config? If its got a straint 6, theyre pretty tough. Ive got a strait six in my jeep and its got almost 250,000 miles with ZERO problems other than a busted water pump a few years back. There are tons of considerations, but you have to figure a strait 6 with 6 cylinders and 7 main bearings, while usually smaller and with less power potential, will generally be more durable that a v-8 with only 5 main bearings, all else being equal. Just a thought. But who cares which is tougher, the v8 may last 200,000 miles, and the strait 6 may last 300,000. But neither one of you will drive the cars for that long. Whos faster between stoplights? thats all I care about. The Supra can handle over 900whp on the stock bottom end, which is still more then the LS1. Man, I want a Poopra. |
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