The proof is in. Don't EVER paint a supercharger.
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Originally Posted by Sol
Isn't the M62 coated differently than the M90? Would this affect results?
What about some of the aftermarket roots blowers that come painted black or with a high polish coating?
What about some of the aftermarket roots blowers that come painted black or with a high polish coating?
i have seen a rebiult unit that Boosty had grabbed from the yard..... it had a coating similar to the M62.......
the M90 Gen 3 and the GenV dont have coatings when they are shipped out of the factory at GM
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Reasons the M90'* are typically not coated:
1. Engine cover hides all but the nosedrive, which is painted.
2. Nosedrive is probably also painted to ease cleaning belt dust off it.
3. Coating is expensive.
4. Coating isn't as necessary on the M90, as it spins slower to produce the same boost-and should run cooler.
5. Coating and curing costs time in assembly.
Save labor and money. The bottom line.
1. Engine cover hides all but the nosedrive, which is painted.
2. Nosedrive is probably also painted to ease cleaning belt dust off it.
3. Coating is expensive.
4. Coating isn't as necessary on the M90, as it spins slower to produce the same boost-and should run cooler.
5. Coating and curing costs time in assembly.
Save labor and money. The bottom line.
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From: Salina, KS
Originally Posted by willwren
Supercharger (scrappy dude good for nothing but a paper weight) heated to 350 degrees F. Initial temp taken on all four quadrants.
Further data taken in 5-minute intervals only comparing top to bottom on each half (for thermal mass variation). Comparing OEM Eaton paint to 2 different options.
Further data taken in 5-minute intervals only comparing top to bottom on each half (for thermal mass variation). Comparing OEM Eaton paint to 2 different options.
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Jim, look at WHERE the paint samples are in the pics. The thermal mass is totally different on each end of the SC.
The two OEM'* and two Black paints CANNOT be compared. The rotor end of the SC cools much quicker than the inlet end. I only tested this way to be able to run both tests on one scrap SC.
The two OEM'* and two Black paints CANNOT be compared. The rotor end of the SC cools much quicker than the inlet end. I only tested this way to be able to run both tests on one scrap SC.
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From: Salina, KS
Originally Posted by willwren
Jim, look at WHERE the paint samples are in the pics. The thermal mass is totally different on each end of the SC.
The two OEM'* and two Black paints CANNOT be compared. The rotor end of the SC cools much quicker than the inlet end. I only tested this way to be able to run both tests on one scrap SC.
The two OEM'* and two Black paints CANNOT be compared. The rotor end of the SC cools much quicker than the inlet end. I only tested this way to be able to run both tests on one scrap SC.
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Originally Posted by willwren
Reasons the M90'* are typically not coated:
1. Engine cover hides all but the nosedrive, which is painted.
2. Nosedrive is probably also painted to ease cleaning belt dust off it.
3. Coating is expensive.
4. Coating isn't as necessary on the M90, as it spins slower to produce the same boost-and should run cooler.
5. Coating and curing costs time in assembly.
Save labor and money. The bottom line.
1. Engine cover hides all but the nosedrive, which is painted.
2. Nosedrive is probably also painted to ease cleaning belt dust off it.
3. Coating is expensive.
4. Coating isn't as necessary on the M90, as it spins slower to produce the same boost-and should run cooler.
5. Coating and curing costs time in assembly.
Save labor and money. The bottom line.
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Originally Posted by Sol
Originally Posted by willwren
Reasons the M90'* are typically not coated:
1. Engine cover hides all but the nosedrive, which is painted.
2. Nosedrive is probably also painted to ease cleaning belt dust off it.
3. Coating is expensive.
4. Coating isn't as necessary on the M90, as it spins slower to produce the same boost-and should run cooler.
5. Coating and curing costs time in assembly.
Save labor and money. The bottom line.
1. Engine cover hides all but the nosedrive, which is painted.
2. Nosedrive is probably also painted to ease cleaning belt dust off it.
3. Coating is expensive.
4. Coating isn't as necessary on the M90, as it spins slower to produce the same boost-and should run cooler.
5. Coating and curing costs time in assembly.
Save labor and money. The bottom line.
And they'd likely run slightly quicker if they didn't. We're talking very little power difference here. But if you're serious about performance, why on EARTH would you paint or powdercoat?
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From: Salina, KS
Originally Posted by Sol
Originally Posted by willwren
Reasons the M90'* are typically not coated:
1. Engine cover hides all but the nosedrive, which is painted.
2. Nosedrive is probably also painted to ease cleaning belt dust off it.
3. Coating is expensive.
4. Coating isn't as necessary on the M90, as it spins slower to produce the same boost-and should run cooler.
5. Coating and curing costs time in assembly.
Save labor and money. The bottom line.
1. Engine cover hides all but the nosedrive, which is painted.
2. Nosedrive is probably also painted to ease cleaning belt dust off it.
3. Coating is expensive.
4. Coating isn't as necessary on the M90, as it spins slower to produce the same boost-and should run cooler.
5. Coating and curing costs time in assembly.
Save labor and money. The bottom line.
