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Quote:
Originally Posted by mkingham View Post
Hi Don,

I bought a set of headers that fit around the RH brackets. They were made by JBA Performance Exhaust, part # 1850S-3

Here are two pics






That's awesome. For ~$400 that I see them selling for, that's a deal.
Old 11-02-2011, 02:26 AM
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Hello

What do you guys use for rewcounter? i have bought a 912 tacho because i have read that the ecu gives out a 4 cyl signal but it dosent work. Help me
Old 11-06-2011, 07:30 AM
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My tach went out to North Hollywood Speedometer and Clock Company. Serving your gauge needs since 1955. VDO, Porsche, Mercedes, BMW, Volkswagen, Veigel, Veglia
they take the 911 tach and convert it to the 8 cyl engine. It cost about $200 i think. Works like a charm.
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Old 11-07-2011, 02:49 AM
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Quote:
Originally Posted by sirhiss View Post
Hello

What do you guys use for rewcounter? i have bought a 912 tacho because i have read that the ecu gives out a 4 cyl signal but it dosent work. Help me
Have you seen this?

Tachometer Adapter
Old 11-07-2011, 07:53 AM
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When I put an LS1 into my BMW, all I had to do was change the tach output on the PCM to a 6 cyl instead of the 4 cyl signal it was originally putting out.
Old 11-07-2011, 07:55 AM
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I just noticed on a lot of these swaps, are people no longer running power steering?
Old 11-08-2011, 07:27 AM
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Quote:
Originally Posted by Don Nguyen View Post
I just noticed on a lot of these swaps, are people no longer running power steering?
Most or all of the cars you are talking about never came with power steering as an option.
Old 11-08-2011, 01:08 PM
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I do not normally respond to post on purist Porsche comments because it is like debating politics. Just so everyone knows my position,
I own a Corvette also. I wanted a vehicle with the power of a Vette but handle like a Porsche 911. I can truly say (in my opinion), I now have the best of both worlds.
Old 11-08-2011, 04:42 PM
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This is a very interesting build, I love the details, but not sure if I buy into the idea yet. I am just wondering how well would handle..... even if the LS engine is technically lighter (and not by much if I understand correctly) isn't the center of gravity much higher with the V8? And isn't the car still heavier overall with the additional weight of the cooling system and coolant? I would be nervous entering a corner with the weight that high (though I like the LS's accessories position, nice and low compared to the flat six).

Someone enlighten me: it seems like this conversion is for those who appreciate a straight and flat track, but has anyone run this set up on a road course?
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Old 11-08-2011, 05:14 PM
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LS1 conversion center of gravity

Although the center of gravity did change:
My Porsche 911 equipped with the LS1 conversion and Toy-Jet rear mounted cooling system installation yields a combined weight savings of 21 pounds lighter at the rear of the vehicle. I had to fill the fender wells back up with 17" wheels to get rid of the excess gap my lighter LS1 setup made. I could have adjusted my suspension to compensate for this issue but I wanted to take advantage of the more top speed end the taller tires gave me. I have to be honest and tell you that I have never done a road race or obstacle course, I only drag race occasionally.
Old 11-08-2011, 06:44 PM
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This doesn't add up, a 3.2l weighs 380lbs a ls1 weighs 450lbs, without a cooling system attached to it. Depending on the position of the ls1 you would get the fender gap if the weight was farther forward. But I don't see how it could be lighter...
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Old 11-08-2011, 07:07 PM
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LS1 conversion center of gravity

I did this comparison about 11 years ago. I took both setups to the refinery where I work and put both setups on a scale.

See the results at:
Toy-Jet.com
Old 11-08-2011, 07:50 PM
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What kind of water pump is used in place of the original factory piece?
Old 11-16-2011, 08:14 PM
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An inline pump that pumps at least 55 gpm.
Old 11-17-2011, 04:58 AM
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Quote:
Originally Posted by Don Nguyen View Post
What kind of water pump is used in place of the original factory piece?
Hi Don, I used a Meziere 55 GPM remote pump (Part # WP316B) If you look at the 2nd photo on post #199 (or 200) you can see it mounted to the RH engine cradle. It is blue.

Mike
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Old 11-17-2011, 11:50 AM
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Well, I weighed the car the other day. For some reason, I don't think the scale was correct. I used the local transfer station at the dump and they weighed the car in at:

2940 lbs. When I started the conversion out it weighed 2612 lbs. I am getting my new torsion bars put in - 30mm in the rear and 22mm in the front along with adjustable spring plates. The photos below show the new parts. When I measured the distance from the ground to the bottom of the wheel well originally I had:

LF: 26 1/8" NEW HEIGHT - 25 7/8"
RF: 26 1/16" NEW HEIGHT - 26"
LR: 25 3/8" NEW HEIGHT - 25
RR: 26 1/8" NEW HEIGHT 25.5"

So, once the corner balancing is done the car will be re-weighed and it should be pretty accurate. Anyone else see any difference after weighing their ls conversions?




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Old 11-17-2011, 01:27 PM
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The following work is complete by my mechanic:

Replaced front torsion bars 22mm
Replaced rear torsion bars 30mm
Replaced spring plates with adjustible spring plates and installed poly bronze bushings.

Set height, corner balance and align. Height 25 1/2 at front fender lip and 25" at rear fender lip.

Weights:

562 545
926 898

for a grand total weight of 2931 lbs without driver and tank 3/4 full
includes porsche air pump/tire, etc... Nothing left out. Stock as you would buy at the dealership except for the LS1.

My initial weighing when I started this build was flawed. I used a truck scale and now found that it was way off. It was used to weigh commercial trucks. My car barely tipped the scale. The build with the 350 hp ls1 showed to be about the same weight. No gain - no loss - radiator on a steel rear lid turbo wing. Not bad.
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Old 12-08-2011, 09:43 AM
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Yann-
Congratulations! On your hard work. Nice choice of components. I would love to see video. How about some more you tube posts? (hits r good) I've subscribed there as well. Lets see that beast in action!
Jeff
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Old 12-10-2011, 11:49 AM
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Jeff,

I will try and get some up there before the snow hits! Perhaps in the morning I will take it out on a run. Huge difference with the new torsion bars. The squat is gone and the ride is firm but comfortable. I need to get some heat. I am waiting on Clemmons at Toyjet. He has some great ideas. My plan (at this time) is a heater box (if I have the room) around the mufflers and then port into the stock ducts. We shall see...
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Old 12-11-2011, 05:53 PM
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Quote:
Originally Posted by Yan2947 View Post
My initial weighing when I started this build was flawed. I used a truck scale and now found that it was way off. It was used to weigh commercial trucks. My car barely tipped the scale. The build with the 350 hp ls1 showed to be about the same weight. No gain - no loss - radiator on a steel rear lid turbo wing. Not bad.
I thought your original weight sounded kind of light. Congrats on the car must be a lot of fun. I just got done doing a turbo build on my 3.2, I am making about 360hp also. it would be very interesting to see how the cars compared in a straight line! (although i am sure it would probably go to you due to your massive torque!)
Old 12-11-2011, 09:20 PM
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Old 12-11-2011, 09:20 PM
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