Turbo or charger?

[pk2]

Actually Mike,

logic would say add another radiator. However in my experience the overall temp is still well within the same range as stock. Where you could expect excessive, if not fatal heat, is in the combustion chamber exclusively. An extra, indirect radiator won't really help there.

I have EGT (exhaust gas temperature)sensors, the best indicator of cylinder temps. Mine is well within normal operating temps with the recommended 4-5lbs boost. Were I to up the boost, inter-cooling, probably liquid would, more than offset added heat of the super charged, compressed "charge"by calculation (automatically with the proper controller setup).

As to beefed up bottom end and the like, It does sound desirable but I suspect the cost would be about the same as a good 3.6l. I say blow up the 2.5 if it going to (I doubt it) and then replace the rubble with a 3.6l…a push.

Regards, pk

[The Radium King]

turbowerks do make a 2.5 kit; you have to dig a bit at their site.

if you want a euro vendor, ttp make a twin turbo kit, but i shudder at what the cost might be.

re superchargers, imagine auto, vf engineering and tpc all made kits for the boxster, but all stopped (including tpc, unless it's not on their website).

[pk2]

THey all ran about 12k installed when they were fresh and quite the thing. There were no more faster Box's around... pushing 300hp +/-. Now you can have one doing the same rt off the shelf.

At $2.5k for a used setup, if your very handy & have more time than money, not such a bad route to go. 'elluva lot a fun.

PK

[The Radium King]

i'm a big fan of supercharging as well - instant power w/ no lag. not a big fan of how they did engine mgmt in most of those kits, however - 7th injector and piggyback computer - can't help but think there's too much room for error in something like that and, combined with a weak engine (as opposed to say the same application on a 964/993) perhaps one of the reasons why supercharger kits have a bad rap for failures - a few too many lean conditions in a weak engine resulting in holed pistons.

most of the turbo kits have gone to larger injectors and custom tunes of the existing computer, so should run safer (within the bounds of the relatively limited timing adjustment allowed by the computer, and the lean conditions caused by the lack of diverter in most cases) but i think the turbo kit makers still struggle with the bad rap FI of these engines was given in the early years by the supercharger kits.

having said that, if you have a source for a used superchager kit for $2,500 - lemme know - imagine a twin-charged boxster!