HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Headers, headers, HEADERS!

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Re: Headers, headers, HEADERS!

Post by xschop on Tue Jun 16, 2009 2:13 pm

If the right pic puts the tube in the way of the MC. I will machine an 2" offset adapter plate for the MC.
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Re: Headers, headers, HEADERS!

Post by Tetzuoe on Tue Jun 16, 2009 6:47 pm

IN, want to make sure Im watching this one. (now to set up all my stuff on this forum)
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Re: Headers, headers, HEADERS!

Post by xschop on Wed Jun 17, 2009 7:59 am

Hey, welcome to tha hood.....PORH
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Re: Headers, headers, HEADERS!

Post by Johnny Johnny on Thu Jun 18, 2009 1:11 pm

Based on this [You must be registered and logged in to see this link.] I wonder if we should be bothering with this exercise? I wonder if they are using custom-built headers or modifying existing ones like what we're doing?

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Re: Headers, headers, HEADERS!

Post by Tetzuoe on Thu Jun 18, 2009 1:32 pm

good question, hey JJ if it saves you some time can I just get the bent tube section? I dont have a TIG setup but I think I can beg/borrow/steal/hack it into place with what ive got lol
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Re: Headers, headers, HEADERS!

Post by Johnny Johnny on Thu Jun 18, 2009 9:41 pm

OK, the driver's side header was delivered today, so I disconnected my intermediate shaft and bolted it up. It's a no-go. Not only does the 3rd primary interfere, the shaft goes straight through the middle of the exit flange! It needs to exit much further back. I have a Gibson header that is the right configuration (though still has some interference on at least one primary) which I'll bolt on tomorrow and post some pictures.

This is going to take a little more work...

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Re: Headers, headers, HEADERS!

Post by Admin on Thu Jun 18, 2009 9:56 pm

Hey , if the guy's (or who ever did it) at RH can do this then I know you can........... Very Happy Very Happy

GET "R" DONE Razz

We've got a lot of people waiting for this.
Thanks for your time and effort.

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Re: Headers, headers, HEADERS!

Post by gt1scca on Fri Jun 19, 2009 3:36 am

How about these...or, Sanderson may put the LS flange on the CC2 / CC90 (?)...which were perfect on the LT1 cars. Yea, I know people have had flange issues w/ the Sandersons, but they're cheap, and work well on the LT...

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2312 driver's

Post by xschop on Fri Jun 19, 2009 7:40 am

Hey Johnny, could the back side of the down tubes be cut and re-angled to put the exit flange on the outside of the shaft?
My engine is set about 1" lower than anyone else's because of the cradle mount so the header looked close....Hmmmm.
Good work BTW....
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Re: Headers, headers, HEADERS!

Post by Johnny Johnny on Fri Jun 19, 2009 7:53 am

I'm going to explore it all in more detail this weekend. Will be taking lots of pictures and measurements.

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PLAN B

Post by xschop on Fri Jun 19, 2009 8:07 am

Here was my Plan B to clear the shaft.....
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Re: Headers, headers, HEADERS!

Post by Tetzuoe on Fri Jun 19, 2009 8:48 am

those sandersons look like they could work, anxious to see pics and measurements!
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Re: Headers, headers, HEADERS!

Post by Johnny Johnny on Fri Jun 19, 2009 11:12 pm

Cleared out the engine bay a bit, removed the steering shaft and replace it with a length of heater hose to make it easier to try out the headers. I've take pictures of both the Hooker block huggers, and also a Gibson short tube I had, and posted them in my gallery.

As you can see, the Gibson fits much better, with the exhaust flange exiting more towards the rear. Not only are the 2nd and 3rd primaries in the way on the Hooker header, but the exit flange interferes with the steering shaft as well. I'm not sure how feasible xschop's "plan B" is, with cutting the exhaust flange and moving the whole unit back one primary (with the 4th primary moving up to the front). You would definitely need an entirely new exhaust flange due to the mounting holes not being consistent.

As for the Gibson, well, strangely enough, the passenger side fits horribly! For some reason they made the primaries much longer at the exhaust flange before they bend down, and they interfere with the shock tower quite a lot. Also, the collector exits almost horizontally - I've even cut off the exit flange and there's still not a lot of room for a sharp 90 degree bend, which is very near the starter.

I'm going to document the various options, and bring them to my local fabricator to see what the approximate costs would be. I'll also ask what the cost would be for an entirely custom DS header (assuming the use of the Hooker header on the passenger side).

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Re: Headers, headers, HEADERS!

Post by Johnny Johnny on Fri Jun 26, 2009 6:28 am

UPDATE

Things are looking good!

I've separated the exhaust port flange from the tubes, and I've cut out the primaries for cylinders 5 & 7 (rearmost 2 pipes) at the collector. The whole thing is then going to be shifted back one cylinder, putting the exhaust exit behind the steering shaft. #1 cylinder will now go to over the other primaries (but still lower than the brake MC), and #7 will do an S-bend into the collector. This solution will have the following benefits:

- they clear the steering shaft (obviously Neutral )
- You can install/remove them without removing the steering shaft first
- You can install/remove the plugs without too many contortions
- There's very little additional pipe needed to make it work - probably only one bent piece needed.

I've used a piece from my Gibson header, since the primaries are the same, so I got away with not having to have a piece custom bent. I'm going to ask around to see what the cost is for someone to do this. I don't have a torch head and tank large enough to sand bend them myself, so I'll have to outsource. Overall I think it will be pretty easy.

I'm taking pics as I go, and will post some shortly...

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Gettin' bent

Post by gt1scca on Fri Jun 26, 2009 7:16 am

Johnny Johnny, you da man. No pressure...but you're finalizing the missing link.

Awesome, Razz Freakin' SCHWEEET!

This should give the "Gestapo crickets" a nice, fat cluster migraine...
[Ummm, this site NOT for sale... Razz ]


Last edited by gt1scca on Fri Jun 26, 2009 7:18 am; edited 1 time in total (Reason for editing : Eh...What the PORH.)

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Re: Headers, headers, HEADERS!

Post by xschop on Fri Jun 26, 2009 8:21 am

We need a pay homage emoticon.
.....And a PORH emoticon just for posts like this....
My favorite so far Razz
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Re: Headers, headers, HEADERS!

Post by Johnny Johnny on Fri Jun 26, 2009 9:18 am

Okee dokee - here come the pics of the mods so far.

This is what I started with (Hooker 2312):
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Ground the exhaust flange (at ports) off from the inside. I think this is a better way of doing it than cutting off the primaries and leaving stubs - will be easier to weld back on and machine flat. A bit of a PITA without a air die grinder!
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Cut #5 and 7 primaries off at collector weld.
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Shift primaries back one on the flange, using #5 primary piece from above for #7 exhaust port.
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And this is how #1 primary will be routed, using original #7 primary from the collector, and adding a piece over to #1 port.
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This shows where the collector sits now, it's relation to the steering shaft, and the weird chunk of the block that needs to be ground off.
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Will be finishing up #1 primary this weekend and will post pics as I go. It's close, man....real close.

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Re: Headers, headers, HEADERS!

Post by WillSoz on Fri Jun 26, 2009 9:59 am

Hey All,

I have been in the background for a couple years while storing up parts for my own conversion to LS. I found these on ebay at one point and wonder if you think they would work. The drivers side is really tight and exits close. What do you think?


Part numbers are: GM part# 12578029 & 12578030 including heat shields GM part# 12578032 & 12578031

I tried to post the picture I have, not sure if it went in...

I have the picture I can send out if needed.

Bill

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Re: Headers, headers, HEADERS!

Post by Johnny Johnny on Fri Jun 26, 2009 10:07 am

Pics didn't show up. All the stock GM exhaust manifolds have the same issue on the driver side - the exhaust exit flange and one or two of the primaries interferes with our intermediate shaft. This is why the Hooker header above is being modified in the previous posts. Being a tubular header it's easy to cut, add, and re-weld.

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Re: Headers, headers, HEADERS!

Post by WillSoz on Fri Jun 26, 2009 10:18 am

I understand the tubluar modification side of things... I was just wondering since I have never seen this design before on any of the boards. Here is the link...
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2312's

Post by xschop on Fri Jun 26, 2009 10:32 am

Man, That is a beautiful thing.
Do you think the tubes can be cut off right at the flange, then the flange set up on a mill to clean the flange?
If so, I can do this part of the Modification quickly and with precision.
Woo-hoo.....exited, but patient..... Cool
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Re: Headers, headers, HEADERS!

Post by Tetzuoe on Fri Jun 26, 2009 11:47 am

earlier models have all kinds of annoying brake/fuel lines around there, man later ones are so nice
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2312 passenger's

Post by xschop on Sat Jun 27, 2009 6:36 pm

I removed my 1" drop down spacers to see how much clearance the stock Hooker 2312 has on the passenger's side without having to do anything. I also put up one of my solid uprights (passenger side) motor mount and it clears it by a mile. If you were to come straight down from the header, there would still be 3/4" clearance away from the xmember. From my experience the LS engines need at least 3/4" drop for the hood to clear....FYI
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I think I am the first to put in the 5.3l Truck motor. The Vette intake is Swcheet. Can the Throttle body be trimmed on the forward top of it for a little more hood clearance? Thought somebody on Gestapoville mentioned that....

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Until next time.......PORH and Cricketville Razz Razz Razz Razz Razz Razz Razz Razz
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Re: Headers, headers, HEADERS!

Post by 944-LT1 on Sat Jun 27, 2009 7:06 pm

Wow. This is turning out to be quite an impressive thread! Cool

and yes...FRH

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LSxxx...Man that is se-xxxy

Post by gt1scca on Sat Jun 27, 2009 8:47 pm

Awesome.
Freakin' T-totally awesome.
Oil pan, and this pig is BBQ'd.

Here, cricket...cricket...cricket.

Razz

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Re: Headers, headers, HEADERS!

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