IS 350 Supercharger
07-30-10, 06:54 AM
#16
Are we talking about track cars or drag cars? If you're talking about track cars, I've seen a civic (EK) with K20 head + K24block smoking a supercharged corvette (C6) on a track. Power is not everything on a track. If it's a drag racing it's different story.
07-30-10, 12:15 PM
#17
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35k budget?
fine a good used one for about 30-32.
3k in mods, like i said, you'll be giving the F's an *** wooping
its the truth.
and why are we bringing up civics lol..
obviously if he has an is350 he wants a quick car with a little bit of style...
so a 335i would suit him pretty well.
fine a good used one for about 30-32.
3k in mods, like i said, you'll be giving the F's an *** wooping
its the truth.
and why are we bringing up civics lol..
obviously if he has an is350 he wants a quick car with a little bit of style...
so a 335i would suit him pretty well.
08-11-10, 10:35 PM
#18
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Stepping on the gas and going fast in a straight line has got to be the most boring way of racing known to man kind.
Forget the IS-F and the 335. If you want to run 10s and 11s in a straight line buy an old 5.0 Mustang and drop a few mods in it
why spend 45+ to go fast in a straight line?
08-12-10, 12:19 PM
#20
Lexus Test Driver
if you want more power and you have the money, swap a 2jz. its your best bet to get more power if you have the funds.
08-12-10, 10:16 PM
#25
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Why waste time with all this expensive stuff when you can buy an F-body, build a small block 383, and smoke all these imports at the drags running 10's for less than $15k total investment. If it's all about straight line 1/4 mile speed, you can't beat domestic for quick and ridiculously cheap.
If you put a turn in the way, everything changes.
If you put a turn in the way, everything changes.
08-13-10, 09:55 AM
#26
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Since the IS350 uses a combination of direct and port injection has anyone successfully adapted the fuel system to allow turbo/supercharging? I know of a couple of cars shown with turbo(s) but is the fuel system up to the task?
Turbocharging is the most flexible way to increase power on any engine. Of course there is also nitrous oxide which is actually chemical supercharging.
Assuming the fuel system can be made to work with it more displacement it should be doable to source a 1GR-FE short block (from a Toyota truck) and install the 2GR-FSE heads, intake, fuel system and all other components. The 1GR has the same 94mm bore as the 2GR but has 95mm stroke vs the 83mm in the 2GR. This would give you a 4 liter aka IS400. In theory you should be able to get very close to the same specific output of the 350 multiplied to the larger 4 liter displacement.
3.5 liters making 306hp and 277tq = 87hp/ltr and 79tq/ltr
this same specific output when applied to 4 liters = 348hp and 316tq
Add headers, tuning, etc and you should get close to the power to weight ratio of an IS-F
IS350 at 3530 pounds with est 360hp = 9.8 pounds per HP
IS-F at 3780 pounds with 416hp = 9.1 pounds per HP
Turbocharging is the most flexible way to increase power on any engine. Of course there is also nitrous oxide which is actually chemical supercharging.
Assuming the fuel system can be made to work with it more displacement it should be doable to source a 1GR-FE short block (from a Toyota truck) and install the 2GR-FSE heads, intake, fuel system and all other components. The 1GR has the same 94mm bore as the 2GR but has 95mm stroke vs the 83mm in the 2GR. This would give you a 4 liter aka IS400. In theory you should be able to get very close to the same specific output of the 350 multiplied to the larger 4 liter displacement.
3.5 liters making 306hp and 277tq = 87hp/ltr and 79tq/ltr
this same specific output when applied to 4 liters = 348hp and 316tq
Add headers, tuning, etc and you should get close to the power to weight ratio of an IS-F
IS350 at 3530 pounds with est 360hp = 9.8 pounds per HP
IS-F at 3780 pounds with 416hp = 9.1 pounds per HP
08-13-10, 11:12 AM
#27
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Since the IS350 uses a combination of direct and port injection has anyone successfully adapted the fuel system to allow turbo/supercharging? I know of a couple of cars shown with turbo(s) but is the fuel system up to the task?
Turbocharging is the most flexible way to increase power on any engine. Of course there is also nitrous oxide which is actually chemical supercharging.
Assuming the fuel system can be made to work with it more displacement it should be doable to source a 1GR-FE short block (from a Toyota truck) and install the 2GR-FSE heads, intake, fuel system and all other components. The 1GR has the same 94mm bore as the 2GR but has 95mm stroke vs the 83mm in the 2GR. This would give you a 4 liter aka IS400. In theory you should be able to get very close to the same specific output of the 350 multiplied to the larger 4 liter displacement.
3.5 liters making 306hp and 277tq = 87hp/ltr and 79tq/ltr
this same specific output when applied to 4 liters = 348hp and 316tq
Add headers, tuning, etc and you should get close to the power to weight ratio of an IS-F
IS350 at 3530 pounds with est 360hp = 9.8 pounds per HP
IS-F at 3780 pounds with 416hp = 9.1 pounds per HP
Turbocharging is the most flexible way to increase power on any engine. Of course there is also nitrous oxide which is actually chemical supercharging.
Assuming the fuel system can be made to work with it more displacement it should be doable to source a 1GR-FE short block (from a Toyota truck) and install the 2GR-FSE heads, intake, fuel system and all other components. The 1GR has the same 94mm bore as the 2GR but has 95mm stroke vs the 83mm in the 2GR. This would give you a 4 liter aka IS400. In theory you should be able to get very close to the same specific output of the 350 multiplied to the larger 4 liter displacement.
3.5 liters making 306hp and 277tq = 87hp/ltr and 79tq/ltr
this same specific output when applied to 4 liters = 348hp and 316tq
Add headers, tuning, etc and you should get close to the power to weight ratio of an IS-F
IS350 at 3530 pounds with est 360hp = 9.8 pounds per HP
IS-F at 3780 pounds with 416hp = 9.1 pounds per HP
OMG, finally someone on here not drooling over VP pillows. YES, you're def onto something my friend. Adapting the fuel system isnt a really big deal but I worry that eliminating certain aspects of the OEM system may throw all kinds of trouble with the oem computers.
It seems to me that the biggest issue with boosting the stock motor is the compression being so high. I'm not sure if a slightly thicker gasket and strong headstuds would be enough, or if you actually have to swap out the pistons to lower comp ones. What you stated above sounds great but alot of people will not want to get into a 15k project (minimum) between putting together a frankenstein motor with all forged internals, then doing the turbo setup. Plus who knows if the crank angle sensor, knock sensor, etc... will all match up. Then we need to custom wire things and so on.
lastly, you're comparing the weight of a stock IS350. Swap that block in there and you're going to have a heavier car by probably at least 100 lbs. The ISF also has an 8 spd tranny which I'm sure accounts for some of the weight, but the is350 tranny may not be able to hold the power anyway, so then we're stuck modding that as well.
When we're done we may have an IS350 with 20k invested that has the same power as a stock motor ISF running 7psi. Or we could have bought a newer m3, z06, 335i and modded it, etc...
08-13-10, 12:10 PM
#28
Lexus Champion
OMG, finally someone on here not drooling over VP pillows. YES, you're def onto something my friend. Adapting the fuel system isnt a really big deal but I worry that eliminating certain aspects of the OEM system may throw all kinds of trouble with the oem computers.
It seems to me that the biggest issue with boosting the stock motor is the compression being so high. I'm not sure if a slightly thicker gasket and strong headstuds would be enough, or if you actually have to swap out the pistons to lower comp ones. What you stated above sounds great but alot of people will not want to get into a 15k project (minimum) between putting together a frankenstein motor with all forged internals, then doing the turbo setup. Plus who knows if the crank angle sensor, knock sensor, etc... will all match up. Then we need to custom wire things and so on.
lastly, you're comparing the weight of a stock IS350. Swap that block in there and you're going to have a heavier car by probably at least 100 lbs. The ISF also has an 8 spd tranny which I'm sure accounts for some of the weight, but the is350 tranny may not be able to hold the power anyway, so then we're stuck modding that as well.
When we're done we may have an IS350 with 20k invested that has the same power as a stock motor ISF running 7psi. Or we could have bought a newer m3, z06, 335i and modded it, etc...
It seems to me that the biggest issue with boosting the stock motor is the compression being so high. I'm not sure if a slightly thicker gasket and strong headstuds would be enough, or if you actually have to swap out the pistons to lower comp ones. What you stated above sounds great but alot of people will not want to get into a 15k project (minimum) between putting together a frankenstein motor with all forged internals, then doing the turbo setup. Plus who knows if the crank angle sensor, knock sensor, etc... will all match up. Then we need to custom wire things and so on.
lastly, you're comparing the weight of a stock IS350. Swap that block in there and you're going to have a heavier car by probably at least 100 lbs. The ISF also has an 8 spd tranny which I'm sure accounts for some of the weight, but the is350 tranny may not be able to hold the power anyway, so then we're stuck modding that as well.
When we're done we may have an IS350 with 20k invested that has the same power as a stock motor ISF running 7psi. Or we could have bought a newer m3, z06, 335i and modded it, etc...
As far as weight goes with the only difference between the 1 and the 2 is the slightly heavier crankshaft with more stroke. Otherwise there should not be a weight increase with this swap.
If only doing a block swap and not looking for turbo/supercharger application this could be done with a JDM import 1GR engine or a wrecking yard engine. Cost may be under 3k for someone turning their own wrenches. Maybe WAY under that if the engine aquisition cost is low enough. Of course with the heads off the block it could be a great time to port the heads!
If this were my project I may try to source a 1GR-FE and an additional 2GR-FSE and build the engine out of the car to comfirm interchangability. The end result should be an identical appearing engine with 4 liters of displacement that accepts ALL the stock IS350 sensors, brackets, attachments, etc. There should be no need or desire to eliminate any of the OEM sensors. It is unkown of course whether the knock sensors would perform the same with the slightly larger engine that may have different sound frequencies.
Considering that this swap would only increase displacement by 14.3% it may be within the ability of the stock fuel system to compensate. It is possible that NO fuel system mods would be required to run this all factory IS400
