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Forced Induction Forum Sponsored by Active Autowerke
Discuss supercharging, turbocharging and even nitrous and water injection here.
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Old 10-17-2012, 01:47 PM   #1
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HG need replaced?

I hope to be taking posession of a 99 e36 m with a stage 2 aa kit. Its a bit of a broad question so I thought Id ask here.

The car has 215,000 kms well maintained. Kit has been on 40,000 kms or so. No leaks in car except vcg is weeping and no boost leaks. New m5 clutch and lightweight flywheel. Tranny is solid and compression checks are good!

So my question is should I do the hg preventative? Is it necessary? Only running 10psi. Also what else should I expect to do in the near future? Supercharger maintenance? Etc? TIA
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Old 10-17-2012, 03:05 PM   #2
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Old 10-17-2012, 03:51 PM   #3
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If compression and leakdown are good, no milkshake on the oil cap or in the coolant bottle, boost on! What made you question whether to replace it or not?
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Old 10-17-2012, 04:06 PM   #4
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Your best bet for this answer would be to head over to Bimmerforums.com
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Old 10-17-2012, 05:31 PM   #5
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Jus thinking because it has higher kms and is boosted that there may be a threat of the hg being on its way out.
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Old 10-17-2012, 05:37 PM   #6
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If your compression and leak down test are good then your engine is fine. Go have fun with it.
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Old 10-18-2012, 08:03 AM   #7
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Your best bet for this answer would be to head over to Bimmerforums.com
Because I didn't already answer his question? Just because most FI cars on here are E46 M3's doesn't mean we all have those cars. Quite a few people here with plenty of experience with boosted BMW's in general
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Old 10-18-2012, 08:43 AM   #8
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Worth noting I have never owned FI before so just curious what to look for and what to expect when owning a unit with higher kms
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Old 10-18-2012, 09:39 AM   #9
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Drive it had and check the top coolant hose. If it's not like a rock after a 30 minute beating you're good.

Changing a headgasket isn't really a preventative thing. If it ain't broke don't fix it!
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Old 10-18-2012, 10:31 AM   #10
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Drive it hard and check the top coolant hose. If it's not like a rock after a 30 minute beating you're good.

Changing a headgasket isn't really a preventative thing. If it ain't broke don't fix it!
Thanks for chiming in! Could you explain a little further? Why would it be like a rock?

Also anythin you could mention to look for or be prepared to address with a higher km car and a charger with 40,000 kms?
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Old 10-18-2012, 11:03 AM   #11
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Thanks for chiming in! Could you explain a little further? Why would it be like a rock?

Also anythin you could mention to look for or be prepared to address with a higher km car and a charger with 40,000 kms?
If the headgasket has a leak between a cylinder and a coolant passage, combustion will over pressurize the coolant system. In this case you would be inducing air (combustion) into the coolant. Air rises so it would be found/trapped in the highest point of the cooling system.
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Old 10-18-2012, 12:38 PM   #12
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Because I didn't already answer his question? Just because most FI cars on here are E46 M3's doesn't mean we all have those cars. Quite a few people here with plenty of experience with boosted BMW's in general
Of course you did! Just pointing him to where the majority of the e36 crowd resides in order to get more diverse answers in the future
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Old 10-18-2012, 01:28 PM   #13
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Of course you did! Just pointing him to where the majority of the e36 crowd resides in order to get more diverse answers in the future
A 99' 323 is an E46
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Old 10-18-2012, 02:49 PM   #14
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A 99' 323 is an E46
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I hope to be taking posession of a 99 e36 m with a stage 2 aa kit.
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Old 10-18-2012, 03:09 PM   #15
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Ya I definately plan on heading over to the other forums. But i just love everybody here too much lol. It is a general question concerning fi and have gotten some good response thanks!

Still is there any further things to be aware of fi related that maybe I should look for or be aware of? Thanks!
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You sir, just thread jacked the sh!t out of OP.
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Old 10-18-2012, 03:15 PM   #16
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Didn't catch that, sorry!
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Old 10-18-2012, 03:16 PM   #17
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Ya I definately plan on heading over to the other forums. But i just love everybody here too much lol. It is a general question concerning fi and have gotten some good response thanks!

Still is there any further things to be aware of fi related that maybe I should look for or be aware of? Thanks!
Yes, a supercharged S52 is still slow
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Old 10-18-2012, 03:18 PM   #18
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While being quite reliable, a supercharger will exacerbate any current issues and could accelerate wear in some areas. As long as you keep up with everything on time you should be fine. Just make sure you're up on your oil changes, change your Rotrex oil after about 80k, change the plugs every 15-20k miles. As long as you stay on top of maintenance you shouldn't have a problem.
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Old 10-18-2012, 03:34 PM   #19
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Zak,

Sorry to go off topic - is the HKS charger the same in Oil change? 80,000 KM?
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Old 10-18-2012, 04:09 PM   #20
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Yes, a supercharged S52 is still slow
Really?
This thing is putting down 360-380 to the wheels.
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