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I own a 2008 Boxster S Tiptronic. Originally, car has three radiators (Left, Right, Centre - tiptronic comes with centre). However, have installed a turbo kit and using centre radiator now as intercooler radiator. As the engine has lost the centre radiator, concerned about cooling. Any ideas? Would larger side radiators fit, and if so what from model? Would GT3 or Turbo side radiators be larger?...and offer additional cooling and any successful installs? Open to additional ideas, but do need to keep centre radiator for intercooler.

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You did not lose any engine cooling -- as you said the 3rd radiator cools the Tiptronic normally. So, you lost Tiptronic cooling.

The widebody radiators are slightly larger but you may also need the appropriate ducting and may need to upgrade teh front bumper to C4S or Turbo style.

That still does not solve the Tiptronic cooling problem... I'll have to think about that one

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You did not lose any engine cooling -- as you said the 3rd radiator cools the Tiptronic normally. So, you lost Tiptronic cooling.

The widebody radiators are slightly larger but you may also need the appropriate ducting and may need to upgrade teh front bumper to C4S or Turbo style.

That still does not solve the Tiptronic cooling problem... I'll have to think about that one

Thought all 3 radiators were connected as coolant radiators for engine, but may be wrong? Any suggestions appreciated!

On the topic of widebody radiators, any feedback you could provide on whether you are referring to those from a GT3 or Turbo and which bumper can be installed? If I were to install them onto the Boxster, what challenges should I be aware of?...as I understand mounting points and hosing might be quite different. I do know of a local shop that has installed GT2 front bumpers. I do currently have an additional small radiator installed in front of the left radiator which the mechanic calls the "gear box radiator" - his translation. Not sure if this is to accommodate the transmission/ tiptronic but will find out.

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From the Porsche 2005 Product Information Book 987 series...

"On the Boxster S with Tiptronic S, an additional third radiator is used in the front end of the vehicle to facilitate cooling of the automatic transmission oil via an additional oil-water heat exchanger in the common water circuit."

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Loren, from the desritption on the mods on his car, I think the shop replaced the OEM central radiator for the Tip with an intercooler assembly and then added and air to oil trans cooler in front of one of the side radiators to make up for it. Not an ideal set up.

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Anyone know about the details of a "turbo" kit for this NA car?

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Anyone know about the details of a "turbo" kit for this NA car?

Don't know about his setup but

there is a guy in Austin I know that has aftermarket turbo kits.

www.turbowerx.com

Mike

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Loren, from the desritption on the mods on his car, I think the shop replaced the OEM central radiator for the Tip with an intercooler assembly and then added and air to oil trans cooler in front of one of the side radiators to make up for it. Not an ideal set up.

You got it, that's the setup. Any suggestions for tip cooling? Just don't have enough space for a full additional radiator for the intercooler assembly.

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To do it properly, you will need to determine the heat transfer capacity of the original Tip center radiator, and mount enough air/oil capacity coolers in front of the outside radiators to make up for it. Unfortunately, this will also reduce the outside radiators capacity to some degree as well, leading to a "running hot" situation. You are somewhat in a "no win" situation as these cars were never designed to run a Tip without the center radiator…….

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