IS250 vs IS350 external block dimensions?
04-02-16, 01:49 PM
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IS250 vs IS350 external block dimensions?
So I recently bought an IS250 because I couldn't pass up the price. Car is in great condition, minus the burned out bulb in the center console for the shifter. I plan on fixing that later this month.
But on to my question. From everything I can gather, the 250 and 350 have identical external dimensions mounting points for engine acc., etc. Am I correct?
The reason I ask is it would be nice to find a supercharger kit for the thing. I know, I should have bought a 350, but if you could have gotten the price for the car I just bought, you'd have done it too. 48k miles, all the options, never wrecked, bought from an old lady who used it to get around town, and recently decided to quit driving (82 years old), and I talked her down to $7200 because I brought my kids who were being super well behaved and she thought they were cute.
But on to my question. From everything I can gather, the 250 and 350 have identical external dimensions mounting points for engine acc., etc. Am I correct?
The reason I ask is it would be nice to find a supercharger kit for the thing. I know, I should have bought a 350, but if you could have gotten the price for the car I just bought, you'd have done it too. 48k miles, all the options, never wrecked, bought from an old lady who used it to get around town, and recently decided to quit driving (82 years old), and I talked her down to $7200 because I brought my kids who were being super well behaved and she thought they were cute.
04-02-16, 02:34 PM
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So has no one tried to put a 350's supercharger on a 250 with some mods? Seems like it would be fairly straight forward?
What am I missing here? I mean, I know I'm only working with 2.5 liters, but it seems like it would be fairly straight forward.
04-02-16, 03:14 PM
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The HKS kit. Pretty much any bolt on centrifugal supercharger kit. I'd imagine the modifications would be minimal. Plus some port work with lower compression pistons and you could make the little 2.5 make 400+ I'd bet. With no mods I could see 300 with a proper tune.
04-02-16, 08:31 PM
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The HKS kit will bolt onto the IS250. A member installed one and made nearly 300hp at 11+psi if I recall. However saying that.. I think he was running dangerously lean at that boost level.
I wouldn't expect to make that sort of power (or more) unless you can find a solution to get more fuel into the engine. I've got a Rotrex kit on my Is250 and this is currently what's limiting me in making more power.
I wouldn't expect to make that sort of power (or more) unless you can find a solution to get more fuel into the engine. I've got a Rotrex kit on my Is250 and this is currently what's limiting me in making more power.
04-02-16, 08:45 PM
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The HKS kit will bolt onto the IS250. A member installed one and made nearly 300hp at 11+psi if I recall. However saying that.. I think he was running dangerously lean at that boost level.
I wouldn't expect to make that sort of power (or more) unless you can find a solution to get more fuel into the engine. I've got a Rotrex kit on my Is250 and this is currently what's limiting me in making more power.
I wouldn't expect to make that sort of power (or more) unless you can find a solution to get more fuel into the engine. I've got a Rotrex kit on my Is250 and this is currently what's limiting me in making more power.
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