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Rickady88GT
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JAN 02, 01:37 PM
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The trunk side headers will need a huge amount of heat shielding of some type to work to there full potential. The surface area of pipe is so great and the pipes are spread so far apart that a lot of heat will be lost from the exhaust gas and dispersed into the engine bay. The loss of exhaust gas heat is significant because the gas will slow down before to gets to the collector because the cooling of the gases will cause it to condense to a lesser volume. That will have a negative affect on the efficiency in that header compared to the other side. The other side will not lose as much heat because the pipes are so close together. Hot gasses expand and cool gasses contract. That is important in headers because expanded hot gasses travel much faster in the pipes than cool contracted gasses. The collector will have much better scavenging efficiency with faster moving gasses.
You may already know this but others reading the thread may not.------------------
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Zac88GT
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JAN 02, 04:20 PM
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| quote | Originally posted by Rickady88GT:
The trunk side headers will need a huge amount of heat shielding of some type to work to there full potential. The surface area of pipe is so great and the pipes are spread so far apart that a lot of heat will be lost from the exhaust gas and dispersed into the engine bay. The loss of exhaust gas heat is significant because the gas will slow down before to gets to the collector because the cooling of the gases will cause it to condense to a lesser volume. That will have a negative affect on the efficiency in that header compared to the other side. The other side will not lose as much heat because the pipes are so close together. Hot gasses expand and cool gasses contract. That is important in headers because expanded hot gasses travel much faster in the pipes than cool contracted gasses. The collector will have much better scavenging efficiency with faster moving gasses.
You may already know this but others reading the thread may not.
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Yeah i'm aware that there will be a significant amount of heat loss but with the radius of the bends and diameter of the pipes i was using there really is no way around it. It may not be at it's maximum efficiency but i'm certain it will be loads better than before.
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rockcrawl
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JAN 02, 09:04 PM
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Just in case you haven't thought of it, I want to recommend Jet-Hot or some other coating for the exhaust. I've used it on the last three swaps I've done, the stuff is really amazing. On my turbo Northstar I had everything done from the headers to the tips including the turbo housing, and it was under $500. Besides the performance gains, it looks great and it should make the parts last a lot longer. It also lowers the underhood temps drasticly, so hoses and stuff will last longer too. I swore I'll never do another swap without Jet-Hot, but I'll probably get cheap. 
Jon
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JCUOIT
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JAN 03, 12:51 AM
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This thread is very interesting. loving the headers, custom flywheel work, and the work done to the tranny to get it mounted. top notch. looking forward to seeing this car someday
JC
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Zac88GT
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JAN 09, 11:51 PM
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I got the headers painted and installed and the engine is just about ready to go back into the car. I just finished my wide band air fuel ratio display for my LC1 controller. The place i got my LC1 from wanted an extra $150 for the gauge so i made this one for like $5. It just accepts an analogue input from 0-5 volts and displays the afr from 10.0 to 19.9.
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Zac88GT
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JAN 10, 08:39 PM
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I got the engine installed in the car today and it went in without a hitch. The closest clearance was on one of the webs for the transmission but it's not an issue at all. There turned out to be loads of room between the rear header and the trunk heat shield. I hooked the shifter cables up quickly to see how it was going to be and it seems pretty good. I need to adjust the cables and reverse detent to get everything aligning properly but after it's adjusted it should be awesome. A little bit more wiring, connect the hoses and connectors, install the suspension axles and brakes, fill the fluids and cross the fingers and it should be ready to fire up.
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buds
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JAN 10, 09:13 PM
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Looks like it all coming together Zac....Very interested to hear how that 6 speed works out for you. Do you have a close up pic of how your dogbone is mounted ?
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Zac88GT
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JAN 10, 11:12 PM
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This is the dogbone mount on the head.
The dogbone attaches to the subframe right where the verticle cradle bolts go. This is an old pic showing the dogbone and roughly where it attaches to the cradle. I welded a 3/8" piece on the other side of the support to dissipate the load over a larger area. Since this pic i've replaced the spherical joint at the head with a poly bushing.
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Zac88GT
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JAN 12, 11:48 PM
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I got a little bit done after work tonight. I almost finished the wiring on the WB02. I adjusted the shifter cables and it shifts great now. I also soldered up my clutch hose adapter. I just got a union to connect to the fiero braded steel hose and then soldered a 90 elbow into that. Then i cut the end off of the G6 clutch line, removed the rubber hose bits from inside it and then soldered that to the elbow. Bled the clutch and it works perfect. The clutch pressure and release point feel identical to the getrag so i'm very happy.
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motoracer838
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JAN 13, 12:16 AM
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This is coming along nicely, those headers are just insane. If my exaust wasn't already done, I'd want a set of your headers. Keep up the good work!!!
If a problem has no solution, there's no use worrying about it,
if the problem has a sulution, there's no problem. Joe
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