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Old 03-02-2018, 10:32 PM   #1
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The street car that wants to be a track car.

I am seriously contemplating a couple of things for my car this summer, but am torn on the "street" reality of my car. Two things, first ditch the damn power steering pump on the engine and associated plumbing and put in an electric up front. I would prefer to keep the frunk carpet if I were to do this, but I'm not sure if that is realistic or not. The other is ditch the A/C and components. Of course, this would save some significant weight. Anyone know how much? Also, any cons to removing these other than convenience/comfort? My primary concerns are properly removing the AC components without loosing my fan/heat capabilities. Anything I am missing, not considering?
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Old 03-03-2018, 03:09 AM   #2
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I am seriously contemplating a couple of things for my car this summer, but am torn on the "street" reality of my car. Two things, first ditch the damn power steering pump on the engine and associated plumbing and put in an electric up front. I would prefer to keep the frunk carpet if I were to do this, but I'm not sure if that is realistic or not. The other is ditch the A/C and components. Of course, this would save some significant weight. Anyone know how much? Also, any cons to removing these other than convenience/comfort? My primary concerns are properly removing the AC components without loosing my fan/heat capabilities. Anything I am missing, not considering?
Youre not going to get much weight from pulling either (compared to what you could pull at the point youre at). Modern ac systems are faily light. You certainly can pull the ac without loosing air or heat though. The power steering is much more complex. There are a few threads on it but there is no good way to eliminate the pump. Id start by converting your power top to a manual one (just pull the motor, gearbox and links), install a lighter battery, pull the sound deadening around the engine, and install lighter seats. You can get greatknock off GT3 seats online. Those three things could save around 150lbs.
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Old 03-03-2018, 05:43 AM   #3
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Two things, first ditch the damn power steering pump on the engine and associated plumbing and put in an electric up front. The other is ditch the A/C and components. Of course, this would save some significant weight. Anyone know how much?
The A/C compressor weighs about 15 lbs. The lines weigh about 4lbs.

The power steering pump weighs about 6 lbs and the lines weigh about 3lbs.

You might get close to 30 lbs total.

And here is a good post from Truegearhead on the subject: Weight reduction results
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Last edited by thstone; 03-03-2018 at 05:48 AM.
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Old 03-03-2018, 09:11 AM   #4
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Cool, thanks guys. The power steering pump isn't really about weight at all, it is just problematic as we all know. I did install a UDP and that has seemed to help. The other part of the equation was less rotating stuff on the motor should free up a bit of HP. The tough part is keeping some creature comforts as my wife likes to go on fun drives etc. so I've got to find the balance of all of that.
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Old 03-03-2018, 09:17 AM   #5
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Youre not going to get much weight from pulling either (compared to what you could pull at the point youre at). Modern ac systems are faily light. You certainly can pull the ac without loosing air or heat though. The power steering is much more complex. There are a few threads on it but there is no good way to eliminate the pump. Id start by converting your power top to a manual one (just pull the motor, gearbox and links), install a lighter battery, pull the sound deadening around the engine, and install lighter seats. You can get greatknock off GT3 seats online. Those three things could save around 150lbs.
TGH: are you talking about these seats?

https://www.ebay.com/itm/Porsche-997-style-GT3-Seats-in-Black-Cloth-w-Black-FRP-Backing-EURO-GT2-PAIR/161752094079?epid=1963314499&hash=item25a92d157f:g:ILwAAOSw7s5Xhp8-&vxp=mtr
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Old 03-05-2018, 10:23 PM   #6
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Doing a bit of searching and came across a power steering fluid inline cooler setup by TuneRS that is pretty reasonably priced. What other options if any, are there to help or remedy the PS fluid spill over with track time? Isn’t it required that the stock hydro pump is maintained in the Spec cars? If so, what do you guys do? Thanks!
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Old 03-06-2018, 02:39 AM   #7
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Wow those look great. Theyre a little different than the old GT3 seats I was referring to but Im sure theyd work well for you.
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Old 03-06-2018, 03:18 AM   #8
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I am seriously contemplating a couple of things for my car this summer, but am torn on the "street" reality of my car. Two things, first ditch the damn power steering pump on the engine and associated plumbing and put in an electric up front. I would prefer to keep the frunk carpet if I were to do this, but I'm not sure if that is realistic or not. The other is ditch the A/C and components. Of course, this would save some significant weight. Anyone know how much? Also, any cons to removing these other than convenience/comfort? My primary concerns are properly removing the AC components without loosing my fan/heat capabilities. Anything I am missing, not considering?
How much do you weigh?
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Old 03-06-2018, 10:27 AM   #9
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How much do you weigh?
A muscular 190... It's easier to take stuff off the car!
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Old 03-06-2018, 10:54 AM   #10
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go for fia rating if you actually want to track the car. otherwise the seat is potentially not made to any standard at all.
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Old 03-06-2018, 11:02 AM   #11
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agree. I would avoid the replica seats and do 1 of 2 things:

1. buy a set of sparcos/OMP, etc for like $1500 and accept that resale is pitiful.
or
2. Buy set of OEM GT3 seats for $3k, take care of them, and then sell them for $3k or more in the future.
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Old 03-07-2018, 08:15 PM   #12
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If you're going to track the car, then you really should get FIA approved seats. While the eBay 997 GT-3 seats look nice, you could get a FIA approved seat for just a little more money.
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Old 03-07-2018, 08:18 PM   #13
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Doing a bit of searching and came across a power steering fluid inline cooler setup by TuneRS that is pretty reasonably priced. What other options if any, are there to help or remedy the PS fluid spill over with track time? Isn’t it required that the stock hydro pump is maintained in the Spec cars? If so, what do you guys do? Thanks!
Yes, the stock steering fluid pump has to remain unmodified in the Spec Boxster race cars. An UDP and/or a power steering fluid cooler is used to keep the temps down.
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Old 03-07-2018, 08:42 PM   #14
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Stone, I see that you are an instructor. I remember an instructor awhile back mentioning that if the drivers seat is replaced/modified the pass seat needs to be the same? Does that ring true?

What I really want to do is simply modify the drivers side, harness etc but leave the pass side stock intact. Im not sure if my wife wants to be getting in and out of a race seat. Ive also considered an in between sport type of seat, but would ultimately prefer to keep the airbag operational at least on the pass side. The seat stuff is down the road a bit. For now, I am going to try the lap belt lock idea for our next AC and see how that goes...
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Old 03-07-2018, 09:16 PM   #15
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I am seriously contemplating a couple of things for my car this summer, but am torn on the "street" reality of my car. Two things, first ditch the damn power steering pump on the engine and associated plumbing and put in an electric up front. I would prefer to keep the frunk carpet if I were to do this, but I'm not sure if that is realistic or not. The other is ditch the A/C and components. Of course, this would save some significant weight. Anyone know how much? Also, any cons to removing these other than convenience/comfort? My primary concerns are properly removing the AC components without loosing my fan/heat capabilities. Anything I am missing, not considering?
not sure what the frunk carpet has to do with anything - electric ps pump will mount up where the cd changer sits no problem. electric ps requires significant fabrication - hoses, pump mounting bracket; not for the timid. or you can go manual - i did, no big deal.

ac can go without affecting heat or fan. just realise that you can delete ac or can delete ps, but if you delete both then you need to install a dummy pulley (or gut your ps pump - i have a gutted pump i can send you if you like). note that deleting ac is not just about weight; with the condensors gone you get a lot more airflow over the rads.

a lot of other places to save weight - airbags, stereo and speakers, seats, wheels, 2-piece rotors, suspension, exhaust, charcoal canister and smog pump, carpets, insulation, bumpers, spare tire, battery, roof motor, carbon hood, flywheel, skinnier gf, ... dude, i removed the struts that hold up my trunk and use a tent pole that i leave on the tarmac when i go out on the track.
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Old 03-08-2018, 03:47 AM   #16
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Stone, I see that you are an instructor. I remember an instructor awhile back mentioning that if the drivers seat is replaced/modified the pass seat needs to be the same? Does that ring true?

.
Yes for most clubs the driver and passenger setups must have equal restraints. This normally translates to the seat belts have to be equal (if driver has 6point passenger must have a 6 point) but the seats are normally up to the instructor. If you have a GT3 seat and a stock seat the instructor may not mind. If you have a stock passenger seat and a FIA race seat with a Halo they will be concerned.

***with boxsters racing seats are normally required to get the driver low enough to pass the broom stick roll bar test. In other words if your helmet isnt below the roll bar and windshield you wont be allowed on the track.
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Old 03-08-2018, 05:57 AM   #17
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im 510 and was able to meet broomstick by mounting gt3 seats right to the floor w bk brackets (ie, no sliders - less weight!) and removing the lower seat cushions (the cushions on gt3 seats are just in w velcro).
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Old 03-08-2018, 10:22 AM   #18
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im 510 and was able to meet broomstick by mounting gt3 seats right to the floor w bk brackets (ie, no sliders - less weight!) and removing the lower seat cushions (the cushions on gt3 seats are just in w velcro).
Im 63 I used the same approach with GT3 seats before I installed the bar. I cant say enough good things about the GT3 seats. Best money I ever spent.
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Old 03-08-2018, 02:38 PM   #19
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not sure what the frunk carpet has to do with anything - electric ps pump will mount up where the cd changer sits no problem. electric ps requires significant fabrication - hoses, pump mounting bracket; not for the timid. or you can go manual - i did, no big deal.

ac can go without affecting heat or fan. just realise that you can delete ac or can delete ps, but if you delete both then you need to install a dummy pulley (or gut your ps pump - i have a gutted pump i can send you if you like). note that deleting ac is not just about weight; with the condensors gone you get a lot more airflow over the rads.

a lot of other places to save weight - airbags, stereo and speakers, seats, wheels, 2-piece rotors, suspension, exhaust, charcoal canister and smog pump, carpets, insulation, bumpers, spare tire, battery, roof motor, carbon hood, flywheel, skinnier gf, ... dude, i removed the struts that hold up my trunk and use a tent pole that i leave on the tarmac when i go out on the track.
Hmmm? Manual? Did you have to replace the rack? That is an intriguing idea. I could care less about power steering.

I'm not quite ready for the full gut. I need to keep a few "creature comforts" for those weekend drives. What I should do is just buy a cheapy and do a build. Years ago I tried that with a 911 SC, man that got $$$$$$ fast! Lot's of great advice guys! Thanks!
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Old 03-08-2018, 02:42 PM   #20
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i bought a second rack on ebay that i had drop-shipped to a specialist machine shop that did the conversion. i can't recall the name offhand, but if you search manual steering on this forum it should come up.
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