944Hybrids: 924/944/968 and 928 V8 Conversions
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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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Couple of clearance questions (hood, crossmember, A/C, headers)

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944-LT1
sharkey
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Hotrodz of Dallas
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taymar
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Post  taymar Sun Nov 06, 2016 7:58 am

Hey all, I'm almost ready to pull the trigger on the v8 conversion, but have a couple of concerns I couldn't find good answers to.

I'd be planning to use an LS3, and my 944 is a late-production Turbo. I want to keep this conversion 100% reversible, and don't want to cut any corners. If anyone can help me out with the following questions I'd really appreciate it.

1. I really want to avoid using crossmember spacers, and don't want a hood bulge. Do I have any options?

2. Can I relocate or use a different A/C compressor so I won't have to clearance the frame rail?

3. Are there options for performance headers that'll fit without needing to clearance the body?

Thank you very much



taymar

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Post  matt889 Sun Nov 06, 2016 9:51 am

taymar wrote:Hey all, I'm almost ready to pull the trigger on the v8 conversion, but have a couple of concerns I couldn't find good answers to.

I'd be planning to use an LS3, and my 944 is a late-production Turbo. I want to keep this conversion 100% reversible, and don't want to cut any corners. If anyone can help me out with the following questions I'd really appreciate it.

1. I really want to avoid using crossmember spacers, and don't want a hood bulge. Do I have any options?

2. Can I relocate or use a different A/C compressor so I won't have to clearance the frame rail?

3. Are there options for performance headers that'll fit without needing to clearance the body?

Thank you very much


1: cut the hood -.- where the Throttle body is ... or a hood crowl
2: i dont know i dont use AC
3: its because space is tight beside the steering shaft -.- its long tubes for performance or shortys for economic budget -.-

matt889

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Post  murrayg Sun Nov 06, 2016 1:01 pm

1. - Use the crossmember spacers. No Big Deal! And completely removable if after driving the car, you still can't sleep nights. And would rather a hood scoop! I used 3/8 spacers, and notched the underside brace of the hood. I made a small "boxed" section where I notched the hood frame, glued it in place with body adhesive, painted it, and it looks factory. It's only a hood, again, easily replaced.

2. - Clearance the frame rail for AC??? What?? I've never heard of such a thing. Just use a F body compressor and weld up the interior variable pressure valve to make it fixed pressure to match the Porsche system. The rest is all 944. Oh, ya, the Camaro AC compressor fits fine without clearancing the frame rail.

3. - Clearancing the body.....I'm I reading this right?? There is no "body work" done for headers to fit. I used TPC long tube headers, and they are a work of art. Sure, they are close to a few things (starter) but they fit fine. Highly recommended.

I have an early 944 with an LS1, which is harder to do than yours. I could return it to 2.5l 4 banger with no signs that it was a V8, except the hood frame notch. Now, please understand, this is all hypothetical, there is no way in hell I'm going back!!

murrayg

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Post  taymar Sun Nov 06, 2016 7:36 pm

Thank you,

Sorry - when talking about the headers I meant any part of the unibody, frame rails, firewall etc.

Great news on the A/C! that's one less thing to worry about.

Do you think modifying the hood brace would be enough without the crossmember spacers? It sounds like the throttle body is what hits? I know I'm being overly picky but really want to avoid using crossmember spacers if I can. Think it'd be possible to create a wedge shaped spacer for the throttle body that angles it down slightly?

Really appreciate the help, thanks again.

murrayg wrote:1. - Use the crossmember spacers.  No Big Deal! And completely removable if after driving the car, you still can't sleep nights.  And would rather a hood scoop!  I used 3/8 spacers, and notched the underside brace of the hood.  I made a small "boxed" section where I notched the hood frame, glued it in place with body adhesive, painted it, and it looks factory.  It's only a hood, again, easily replaced.

2. - Clearance the frame rail for AC???  What??  I've never heard of such a thing.  Just use a F body compressor and weld up the interior variable pressure valve to make it fixed pressure to match the Porsche system. The rest is all 944. Oh, ya, the Camaro AC compressor fits fine without clearancing the frame rail.

3.  - Clearancing the body.....I'm I reading this right??  There is no "body work" done for headers to fit.  I used TPC long tube headers, and they are a work of art.  Sure, they are close to a few things (starter) but they fit fine.  Highly recommended.

I have an early 944 with an LS1, which is harder to do than yours.  I could return it to 2.5l 4 banger with no signs that it was a V8, except the hood frame notch.  Now, please understand, this is all hypothetical, there is no way in hell I'm going back!!  

taymar

Posts : 4
Join date : 2014-12-22

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Post  docwyte Mon Nov 07, 2016 8:16 am

Unless you use the IFC Racing cowl induction hood, you're going to need spacers. Period. Many of us have run spacers for years and lots of miles, both on the street and the track. Just use them, they're fine.

docwyte

Posts : 1393
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Post  Hotrodz of Dallas Mon Nov 07, 2016 8:38 am

Why do you not want to use the spacers? They have been used for years on many swaps without any problems. You'll have to use them or you'll have to cut a big hole in your hood. With the spacers, you only have to notch a small section of the center hood brace.

As far as headers, use any of TPC's and they will not require any cutting of any part of the body, frame rails, or firewall.

As was stated before, use the F-body A/C compressor and there is plenty of clearance. No cutting required.
Hotrodz of Dallas
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Post  erioshi Mon Nov 07, 2016 10:44 am

Why not just plan on a spare hood as part of the build? Hang the original on a garage wall and cut and paint the replacement as needed for the swap. If you decide to reverse th swap latter, your original hood with all the stickers and padding is ready to go.
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Post  racertomtom Mon Nov 07, 2016 1:25 pm

I doubt a 944 Turbo will be worth any more as a collector’s item than it will be as a quality toy. After having LS3 power, you won’t go back to a turbo 4 cylinder engine. Cut and weld on it all you want! Twisted Evil Make it your car.

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Post  sharkey Mon Nov 07, 2016 2:07 pm

racertomtom wrote:I doubt a 944 Turbo will be worth any more as a collector’s item than it will be as a quality toy. After having LS3 power, you won’t go back to a turbo 4 cylinder engine. Cut and weld on it all you want! Twisted Evil Make it your car.

my thoughts exactly. unless the car is a turbo s, in which case id find another car to do the swap in.

sharkey

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Post  944-LT1 Mon Nov 07, 2016 7:35 pm

The clearance on frame rails was for Gen1/LTx conversions not for LSx swaps. With the LSx engines, there is no compressor fitment issues that I'm aware of.

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Post  jHo Mon Nov 07, 2016 8:38 pm

The frame rail clearance issue comes up with the Corvette accessory package. That's why others are saying F-body accessories. Take it from me, there is a difference. I ended up cutting the frame rail and welding in the boxed notch out for clearance on both sides: A/C fittings on the passenger side, and serpentine belt on the driver side. The shop I had do the welding did a great job, but if I could do it again, I would have paid more attention when purchasing the accessories. The "standard" accessory kit on most sites that sell LS3 crates, are the Corvette accessory kit and not the F-body parts.

The other area of "snugness" is the intake. If you're keeping AC & Power steering, then you gotta plan for where you put the air filter, if you're going to keep the flip-up headlights, and if you're going to keep the original hood latch. There are a few options for each of those things, just look around the site.
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Post  taymar Mon Nov 07, 2016 9:45 pm

Thanks for the great insights guys. End goal is to retain all of the 944 functionality and stock exterior appearance. I get that the spacers are tried and tested... But please humor me for a minute. I'm seeing some low profile aftermarket intakes, and am ok with modifying the hood bracing. Is there any hope that could fit without the spacers? Fully understand that it'd be an excessive, expensive, unnecessary approach - but can it be done?

The car is a turbo s, but needs a repaint anyway which I've been told will significantly affect the value. Thanks again for the help.

taymar

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Post  docwyte Tue Nov 08, 2016 8:13 am

Man, we're just not getting through to you.

You NEED the spacers. The intake isn't really the issue, it's the throttle body that hits. Unless you do an IFC Racing cowl induction hood, you NEED the spacers.

Even WITH the spacers you still have to shave down the throttle body and cut away some hood bracing.

You NEED the spacers. They just bolt in, you're not permanently altering the car....

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Post  taymar Tue Nov 08, 2016 8:18 am

Thanks for the clarification, I needed to be 100% sure that the spacers were absolutely necessary and not just the easiest solution. Really appreciate all the advice here.

docwyte wrote:Man, we're just not getting through to you.

You NEED the spacers.  The intake isn't really the issue, it's the throttle body that hits.  Unless you do an IFC Racing cowl induction hood, you NEED the spacers.  

Even WITH the spacers you still have to shave down the throttle body and cut away some hood bracing.

You NEED the spacers.  They just bolt in, you're not permanently altering the car....

taymar

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Post  docwyte Tue Nov 08, 2016 8:22 am

The only other way (that I know of and seen) to not use spacers is to flip the intake 180 degrees.

That puts the throttle body and air filter etc up in the firewall, which you'll then have to cut away to make room there.

So the spacers are the best option when you're not building a race car and aren't interested in permanent metal modification.

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Post  Rich L. Tue Nov 08, 2016 3:50 pm

I did not use spacers in my install. I shaved my throttle body and cut away the support structure under the hood skin. I also completely removed the master cylinders from the firewall in favor of a floor-mounted pedal box. There has been some contact between hood and throttle body, the hood skin is dented upward and the pain chipped but I don't really care because race car.

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Post  Halfkiddio Thu Jan 19, 2017 8:29 am

Rich L. wrote:I also completely removed the master cylinders from the firewall in favor of a floor-mounted pedal box.

You wouldn't happen to have install pics of this would you? There has always been a thought of doing a pedal box setup in mine.

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Post  v8944 Thu Jan 19, 2017 2:22 pm

No spacers on my 5.3 LS swap (running an LS6 intake) Cut the hood support out of the center and ground the housing of the throttle body down a bit and she doesn't hit at all.

LS3 is probably going to be significantly different because of intake/throttle body design....so no promises either way.
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