Ya vibrating V8's in peoples SUV's isn't exactly what the common public wants.
If you shut off an entire bank with a true dual exhaust then the cat gets cooled off, and has to re light off once you re activate the cylinders on that bank.
Search found 398 matches
- Thu Jul 24, 2008 10:10 am
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Cylinder Deactivation
- Replies: 46
- Views: 5502
- Tue Jul 22, 2008 10:11 am
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Cylinder Deactivation
- Replies: 46
- Views: 5502
Pumping losses aside, in the OE spectrum of things leaving valves open of deactivated cylinder does one big no no; pump unburned air into the exhaust. :scratch: All the OE systems leave the valves closed... Ya my wording was odd. I was just saying that besides pumping losses, OE's leave them closed...
- Mon Jul 21, 2008 1:10 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Cylinder Deactivation
- Replies: 46
- Views: 5502
Pumping losses aside, in the OE spectrum of things leaving valves open of deactivated cylinder does one big no no; pump unburned air into the exhaust. Your O2 sensor sees this as a huge huge lean condition, jacks up the injector pulse widths and now the whole point of turning off half of your cylind...
- Thu Jun 19, 2008 2:38 am
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Fuel economy vs gas prices
- Replies: 139
- Views: 29744
I am sure you know this, but the main reason GM did the variable cam phasing on the V8's was to help pass emissions standards while making more power than the earlier engines, as well as help interface with the DoD system. I would agree that playing with the phasing to change the DCR would be fun th...
- Thu Jun 19, 2008 2:31 am
- Forum: Technical Conversations on Pontiac Fieros
- Topic: How do you remove the 3800 crank pulley?
- Replies: 14
- Views: 6195
- Sat Jun 14, 2008 12:56 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: How do you remove the 3800 crank pulley?
- Replies: 14
- Views: 6195
- Sat Jun 14, 2008 12:52 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Fuel economy vs gas prices
- Replies: 139
- Views: 29744
Most race engines that are using a full coated combustion chamber are using a fuel boils at below 0F and have octane rating of over 100, so detonation isn't a problem for them. Will, I would coat your pistons and leave it for now. Then like you said, pull heads and coat for experimental purposes, at...
- Tue Jun 10, 2008 2:51 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Fuel economy vs gas prices
- Replies: 139
- Views: 29744
I agree that when you coat the backside of the valve, obviously the seating area needs to be coating free to allow heat transfer into the valve seat. What I was getting at was that when you coat the backside of the valve, you will reduce the flux of heat through the valve by keeping the heat in the ...
- Sun Jun 08, 2008 11:14 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Fuel economy vs gas prices
- Replies: 139
- Views: 29744
I have seen ceramic coated valve faces, the backsides of the valves but as far as the stem that actually contacts the guide, the only coating i have seen is an anti friction coating for obvious reasons. The only real reason to coat the backside of the valve is to keep heat in the exhaust gases for o...
- Wed May 28, 2008 2:15 am
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Switching to hydrogen....
- Replies: 40
- Views: 4687
Why not just forget about a fuel at all and built a completely electric car? If you are using it for just around town driving, charging overnight would be ample time. Hydrogen isn't worth anything unless its in a fuel cell, burning it isn't worth the trouble when ethanol is much easier to make, come...
- Sat Mar 29, 2008 3:56 pm
- Forum: For Sale
- Topic: Parting out 1988 Fiero
- Replies: 21
- Views: 4197
- Mon Mar 24, 2008 11:57 pm
- Forum: For Sale
- Topic: Parting out 1988 Fiero
- Replies: 21
- Views: 4197
No power anything:( I do have both door panels in good condition with all the fixings; handles, locks, etc. If anyone needs headlight brackets i have both in good shape. Here is a list of other stuff i have: rad fan and rad. all a/c stuff two gray seats in good condition dome light assembly sun viso...
- Sun Mar 23, 2008 1:07 pm
- Forum: For Sale
- Topic: Parting out 1988 Fiero
- Replies: 21
- Views: 4197
- Fri Mar 21, 2008 1:21 am
- Forum: For Sale
- Topic: Parting out 1988 Fiero
- Replies: 21
- Views: 4197
- Thu Mar 20, 2008 6:27 pm
- Forum: For Sale
- Topic: Parting out 1988 Fiero
- Replies: 21
- Views: 4197
- Thu Mar 20, 2008 3:00 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Upcoming 3800 SC recall -- what you should know
- Replies: 21
- Views: 3223
- Thu Mar 20, 2008 12:57 am
- Forum: For Sale
- Topic: Parting out 1988 Fiero
- Replies: 21
- Views: 4197
- Thu Mar 20, 2008 12:57 am
- Forum: For Sale
- Topic: Parting out 1988 Fiero
- Replies: 21
- Views: 4197
Car isn't wrecked, just was a parts car for me and I have gotten what I need from it.The Dark Side of Will wrote:Wrecked? Will you ship the cradle? Front suspension?
You want the front cross member and all? I could ship that, not sure if that would be worth it but its possible.
Rear cradle is mine:)
- Wed Mar 19, 2008 9:44 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Upcoming 3800 SC recall -- what you should know
- Replies: 21
- Views: 3223
- Wed Mar 19, 2008 9:39 pm
- Forum: For Sale
- Topic: Parting out 1988 Fiero
- Replies: 21
- Views: 4197
Parting out 1988 Fiero
If you want something from it let me know.