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Old 12-31-2012, 08:30 PM   #21
OldNuc
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Default Re: Phenolic Heat Shields

That torque bump at 2000RPM is a resonance in something and it needs to go away, lower would be better or even broaden it out.
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Old 01-02-2013, 01:17 PM   #22
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Default Re: Phenolic Heat Shields

Thanks OldNuc, yours are on the way. Only 3 left, don't wait.

By the way, the throttle body spacer is designed to fit a Geo throttle body and includes 2 gaskets. Anyone running the stock Saturn throttle body can cut it down to fit. Thanks.
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Old 01-03-2013, 12:17 AM   #23
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Default Re: Phenolic Heat Shields

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Thanks OldNuc, yours are on the way. Only 3 left, don't wait.

By the way, the throttle body spacer is designed to fit a Geo throttle body and includes 2 gaskets. Anyone running the stock Saturn throttle body can cut it down to fit. Thanks.
how much?
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Old 01-03-2013, 03:23 PM   #24
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Default Re: Phenolic Heat Shields

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how much?
As the first post says $75.00 shipped to US.
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Old 01-04-2013, 01:23 AM   #25
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Default Re: Phenolic Heat Shields

I'm sold, I have to wait till after 2pm on jan 11 to PayPal you due to a recent bank change is that okay?
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Old 01-04-2013, 02:13 PM   #26
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Default Re: Phenolic Heat Shields

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I'm sold, I have to wait till after 2pm on jan 11 to PayPal you due to a recent bank change is that okay?
No problem, I'll set one aside for you.
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Old 01-04-2013, 04:09 PM   #27
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Default Re: Phenolic Heat Shields

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No problem, I'll set one aside for you.
Thank you.
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Old 01-05-2013, 02:57 PM   #28
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Default Re: Phenolic Heat Shields

By the way, I recommend anyone getting these also block off the ERG. This will further reduce heat in the intake manifold. I have dealt with Custom Billet Works on e-Bay. They have 2 different types depending on weather you want to completely remove the ERG or just block it off.

http://stores.ebay.com/Custom-Billet..._sid=210445255
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Old 01-05-2013, 03:20 PM   #29
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Default Re: Phenolic Heat Shields

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By the way, I recommend anyone getting these also block off the ERG. This will further reduce heat in the intake manifold. I have dealt with Custom Billet Works on e-Bay. They have 2 different types depending on weather you want to completely remove the ERG or just block it off.

http://stores.ebay.com/Custom-Billet..._sid=210445255
which one is the complete delete?
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Old 01-05-2013, 03:41 PM   #30
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Default Re: Phenolic Heat Shields

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which one is the complete delete?
You can't tell? It's this one:

http://www.ebay.com/itm/CHEVY-S-10-S...item3a7c82735a

but it will throde a code when you unplug the ERG.
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Old 01-05-2013, 04:07 PM   #31
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Default Re: Phenolic Heat Shields

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You can't tell? It's this one:

http://www.ebay.com/itm/CHEVY-S-10-S...item3a7c82735a

but it will throde a code when you unplug the ERG.
thats what i thought, i just wanted to be sure.
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Old 01-07-2013, 08:50 AM   #32
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Default Re: Phenolic Heat Shields

unplugging and blocking the egr.....doesnt that increase the temperature in the combustion chamber?
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Old 01-07-2013, 09:07 AM   #33
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Default Re: Phenolic Heat Shields

It lowers the temperature in #4 and raises in in all of them due to increased combustion temperature. The restrictor plate is a decent compromise for street use.
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Old 01-07-2013, 11:37 AM   #34
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Default Re: Phenolic Heat Shields

from a post I read a while back, for long runs ie highway, the rise in combustion temp. can cause your exhaust valves and ultimately end up causing valve float, Ive been throwing the idea around of blocking my egr, but havent done it yet due to that issue. would it be a smart idea to do so? and the only reason im asking on here is because Im sure a lot of the others on this thread thinking the same thing as I am.
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Old 01-07-2013, 11:44 AM   #35
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Default Re: Phenolic Heat Shields

The function of EGR is to Lower combustion temperature at small throttle openings, cruising conditions. This is done by reducing the percentage of O2 in the fuel charge. The problem is the exhaust track runs right next to the #4 cylinder at the top and this is HOT exhaust gas. This hot gas heats the #4 cylinder top to a higher temperature than the other 3. There are 2 independent things going on here. Each engine design is different so pointing at the Ford or Chevy board as a reference is not germane. If you do anything that increases horsepower you are also increasing combustion temperature.
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Old 01-07-2013, 01:00 PM   #36
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Default Re: Phenolic Heat Shields

when you do start increasing horsepower, is it smarter to block the egr or no? and if you do block it, is there anyway of reducing the possibility of burning the exhaust valve(s)?
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Last edited by solarcar_sc1; 01-07-2013 at 01:03 PM. Reason: forgot to add something
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Old 01-07-2013, 01:20 PM   #37
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Default Re: Phenolic Heat Shields

There are lots of people running highly modified engines with a full functional EGR. There is minimal justification to block it off except for circle track racing. Possibly restricting the flow is viable but with a properly rebuilt engine they don't cause many problems that would suggest restriction either.
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Old 01-07-2013, 01:51 PM   #38
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Default Re: Phenolic Heat Shields

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The problem is the exhaust track runs right next to the #4 cylinder at the top and this is HOT exhaust gas. This hot gas heats the #4 cylinder top to a higher temperature than the other 3.
Oldnuc, I remember you mentioning this heat issue for #4 earlier - is there anything that can be done about it?

Combination of a pipe to vent in air when moving (green lines) directly over #4, combined with a vent cut into the hood (yellow rectangle)?

Since the exhaust track is internal, doesn't seem like there is a lot that can be done other than trying to cool off the block around #4
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Old 01-07-2013, 02:08 PM   #39
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Default Re: Phenolic Heat Shields

D'Oh! forgot to upload the picture until after the edit window. Not my engine, one found randomly on the web
Attached Images
File Type: jpg DOHC engine.JPG (47.4 KB, 14 views)
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Old 01-07-2013, 02:13 PM   #40
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Default Re: Phenolic Heat Shields

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from a post I read a while back, for long runs ie highway, the rise in combustion temp. can cause your exhaust valves and ultimately end up causing valve float.
No. Valve float is when the valve does not fully close before the next cycle due to week or inadequate valve springs. In other words, it sort of "floats" in the open position. It usually occurs at very high RPM, 10,000 and up and with valve trains having a large mass such a push rod engines. No Saturn would ever see valve float unless there is something wrong with the valve spring(s).
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