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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 08-27-2004, 04:22 PM   #21
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Quote:
Originally Posted by BonneMeMN
Quote:
Originally Posted by 1993 SLE
yea I got the N10 High Flow and the Sound is lower and louder. When you get on it the engine just wants to rev high and get loud
The engine with the setup I had, no MAF screen, and the n10 was MUSIC!!!! Now all I hear is burbles, and a tiny TB roar..... which is good and bad....
n10? What'* that? And whats bad about the TB roar? And the 180 t-stat wont hurt my engine/ or take away from the longevity of it?
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Old 08-27-2004, 05:18 PM   #22
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the N10 is a GM High Flow muffler, This was installed on late 92'* and early 93'* these are extremely rare on an SE. There is only one 93 SE with the high flow on here and it has some other options that makes me think someone that knew something at Pontiac, special ordered the car. ALL 93 SLE'* got the muffler. The whold exhaust system is also 2.5 inch piping as apposed to the 2.25 like all SE'* The N10 was NEVER made after 93
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Old 08-28-2004, 12:21 AM   #23
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Quote:
Originally Posted by willwren
The 180 will gain slightly in performance AND fuel mileage. It keeps your engine running cooler, resulting in a slightly cooler intake charge. Your supercharger actually has engine coolant running through it up to the TB, and back down. Cool it down a bit. Just get a 180 thermostat of the same series as the stock 195, and make sure you get the fiber outlet gasket and rubber seal for the stat. Some of us are running these with bypass holes drilled as well, but that can depend on your climate. Try it undrilled first, then maybe drill it later as you mod more. The 180 really just prevents the initial warmup heatsoak, and allows you to run slightly cooler (but not by 15 as you might expect) while air is actually passing through the radiator. Above 30 mph or with the fans running.

The single largest gain in performance will be seen when you change your SC pulley from the stock 2.55" to the 2.2", but don't do it until after the stat (this will make the SC run hotter), and the intake. Because you also have the 4T60E trans, you may want to consider a larger, or additional trans cooler after the pulley.
is there any thred that explains how to install the thermostat at all? i've been looking and i hope its not some clearly labled post because then i would be really embarrased
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Old 08-28-2004, 01:01 AM   #24
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For you, on the LN3. There is the upper radiator hose, follow that to the block. There is a 7/16, or 11mm bolt. Grab a box head wrench of either size. and a cheater bar if you have the strength of a woman [like me]. Get that sucker off. You may have to remove a few vacum lines or fuel lines [de-pressure fuel lines before removal]. Once you have the bolt off. the housing is one PITA to get off. It took me 15 minutes and finally I just took a large flat head screwdriver and kept prying it up.. got it off. Cleaned it all up, and just drop the new thermostat in the engine block [don't mount it to the housing like it probably came off on]. And make sure the spring side is down. Put on new gaskets. and retighten everything back up. Simple procedure. Just takes a little effort on the cleaning up, especially if your housing looked like mine


-justin
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Old 08-28-2004, 02:10 AM   #25
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Quote:
Originally Posted by beckstyle
Quote:
Originally Posted by BonneMeMN
Quote:
Originally Posted by 1993 SLE
yea I got the N10 High Flow and the Sound is lower and louder. When you get on it the engine just wants to rev high and get loud
The engine with the setup I had, no MAF screen, and the n10 was MUSIC!!!! Now all I hear is burbles, and a tiny TB roar..... which is good and bad....
n10? What'* that? And whats bad about the TB roar? And the 180 t-stat wont hurt my engine/ or take away from the longevity of it?
The SSEi has a free-er flowing exhaust than that already. The N10 is the primo exhaust for a non-supercharged car.
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Old 08-28-2004, 05:15 AM   #26
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How is the SSEi free-er flowing? It'* quieter, and the muffler had split outlets, not one the same side. Air has to do a 180.
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Old 08-28-2004, 01:36 PM   #27
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Quote:
Originally Posted by BonneMeMN
How is the SSEi free-er flowing? It'* quieter, and the muffler had split outlets, not one the same side. Air has to do a 180.
You carry your backpressure all the way out, as you should. The SSEi/SSE releases it sooner at the split. The turns mean nothing. They're mandrel bent.

I personally feel the SSE would have benefitted from the N10, but Pontiac can't get everything right.
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Old 08-29-2004, 03:06 AM   #28
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I'm talking about the muffler/back. The piping is the same on my car as yours, so that doesn't affect it at all.
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Old 08-29-2004, 06:05 AM   #29
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I thought the N10 muffler was mounted long-axis? And wasn't a crossflow design?
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Old 08-29-2004, 02:56 PM   #30
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It'* mounted exactly the same as yours, and has 2 90* tail pipes coming out of the right side of it.
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