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Preventative maintenance / winter projects
#1

Well, yesterday was a phenomenal day at NJMP with a bunch of folks from the local clubs. It was an advanced only day run by Jeff Caldwell, and it was 8 hours of pure heaven. No trains, open passing (with a signal), and a number of fast courteous drivers. Great way to end the season up here.



Now the reason I am starting this thread is to get the rest of the track junkies in the north thinking about maintenance for next year. I'm making my list for the winter of projects to complete to get my car ready for next season, and this is what I'm thinking so far...



Headgasket - I think my headgasket is going as I am starting to see bubbles in the coolant reservoir at the track. Besides at 20 years and 118k it's probably time...okay no probably about it. Leads to the while you're in there inspection of variocam pads (mine were done by me less than 20k ago), cams, all the seals on the cam cover, and a rebuilt head... I'm planning on stock or something close. I'm thinking all new coolant hoses as well. This will also allow access to the intake gaskets, and open up the way to do the replacement cables I've had sitting around for almost two yearsSmile Time for some Robbie/Ice shark electrics.



Belts and Rollers - I do this every year if I track a lot, but usually every other year. This time I'm doing the waterpump. I think I will do the tensioner this time as well. I may need to do the radiator too, but I will take it out, clean it prior to making that step. It cools fine at around 70 degrees, but fails in the 80s on the track.



Rod Bearings - I have no record of these being done, so it's time. Gets a new gasket on the oil pan and the opportunity to look at the oil pickup too. Will likely look at options for a windage tray too.



Power steering reservoir and fluid flush - my rack is okay, but I think I may be rebuilding the pump.



Brake master cylinder - Mine is starting to get soft and push fluid back into the reservoir when pushed. I've had to do this in previous 944 variants I've owned. It's like night and day... I haven't done the booster when doing this. Anyone?



Wheel bearings - I'll look at new rear axles or at least new CVs. If they are in good shape I will clean, regrease, and flip sides.



Trans fluid - I'm thinking of using Amsoil as I like it in the turbo which is also GL5.



Fuel filter - The engine builder who does most of the motors for the 944Cup stated that we need to be changing our fuel filters annually and likely doing the fuel pump every few years! This is not because of normal wear, but the result of ethanol in our fuel. He recommended marine Stabil to neutralize some of the effects. The 944 variants hate ethanol.



Ball joints - not sure if I will change them, but I will certainly take a close look at them. I'm debating whether to just replace the a-arms with Racer's Edge stuff. I don't plan on lowering the car any further than it is now, and have no binding which caused a lot of the issues in early 944 racing.



Other items: Radiator fan switch, check the fans' wiring while everything is out of the way, cleaning the oil cooler, replacing the o-rings in oil filter housing.



I understand that all of this preventative maintenance can get spendy, but I've seen what a car laying down coolant or breaking a ball joint can do... Walls are expensive too.



What am I missing?
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#2

sounds like a pretty comprehensive list. the only other thing i might do is the injectors.
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#3

I hadn't thought of that. I think I will send those out for rebuilding as well. Good call.



I've started tracking more again, and am less concerned about gaining performance than making sure I have what is available/reliable. Most of the items above are while you're in there stuff.



I may send the front struts off for rebuilding, but I think I'll wait on that.
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#4

Balance shaft seals



Jay
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#5

Jay,



I thought of those, but they aren't leaking. I've been debating them. All the parts around them will be off... Where will it end?
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#6

lol - i think i can answer that, but you might not like the answer
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#7

With the engine out, and me much poorer....



I know. Reliable, fast, and cheap. Pick two.
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#8

If your balance shaft seals aren't leaking, I would hold off, especially since you do your belts annually. Keep an eye on them, and replace when you either start to see signs of a leak, or when it just seems like it ought to be time. They're a bit of a pain to get off, and there's a small but finite risk of creating a leak if you don't get them on correctly. Very nice list overall.



What size wheels are you running? If you're running 18", especially if you're on R compound tires, you might want to seriously consider the Racers Edge control arms. Not cheap, for sure, but there have been enough ball joint pin failures on heavily tracked cars to give one pause...
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#9

Cloud,



I concur with your assessment, I've done the balance shafts a couple of times, and don't recall ever doing it without swearing profusely, especially the lower... The front seals are easy. So far no leaks on the rears.



I'm running a spare set of 17x7.5,9s. I'd go to 18s if it were a race car, but it isn't. The RE arms are on the list. I'm just prioritizing it. HANS will be first.



The car actually handles and sticks very well on the Club Sports with Nitto NT-01s. However, I really would like to have the reactions of my buddy's car (my old 944). He's done solid bushings, Tarret sways, and has much higher spring rates. The turn-in and nimbleness of the car make the 968 with M030 parts and sways feel positively lumbering in comparison. I'm not willing to make it a racecar though, and will live with the slower turn-in until I make the decision on racing. Uncle Sam is sending me to the desert for one more go in Apr-Oct, so the decision gets delayed another year.
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#10

Motor mounts, easy with the top of the engine exposed. I'll post pictures of mine that I just changed on a car with less miles, but I just dodged a bullet.
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#11

I was planning on the mounts, but if you have before and after pics, I'd love to see them.
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#12

I've posted pictures in [color="#225985"]OEM REPAIR & TECHNICAL [/color] Engine, Nov 20th, engine mounts.
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