Finally fired up the AC Cobra
Thread Starter
On The Tree
Joined: Jun 2004
Posts: 132
Likes: 0
From: Melbourne, Australia
Finally fired up the AC Cobra Hi All,
I finally got the LS1 running in my AC Cobra replica. I drove it out of the workshop under its own power. It was a good feeling to finally have it running.
It's got the quiet under body exhaust on it at the moment to get through registration. I'll bolt the headers and side pipes on later.
I've just got the bodywork and paint to finish off and a bit of interior trimming. I'm building the car in a race replica style with the bare minimum of creature comforts. No windscreen or wipers or heater, just an aero screen to keep the wind out of your face. The car should weigh in under 1000KG (abour 2200 pounds)
Currently running an internally stock motor with a MAFless tune. I'm working on an eaton M112 blower setup for later on along with a set of ported LQ9 heads and a cam.
Here's a video of firing it up.
Cobra Start Up Video
Cheers
Michael
I finally got the LS1 running in my AC Cobra replica. I drove it out of the workshop under its own power. It was a good feeling to finally have it running.
It's got the quiet under body exhaust on it at the moment to get through registration. I'll bolt the headers and side pipes on later.
I've just got the bodywork and paint to finish off and a bit of interior trimming. I'm building the car in a race replica style with the bare minimum of creature comforts. No windscreen or wipers or heater, just an aero screen to keep the wind out of your face. The car should weigh in under 1000KG (abour 2200 pounds)
Currently running an internally stock motor with a MAFless tune. I'm working on an eaton M112 blower setup for later on along with a set of ported LQ9 heads and a cam.
Here's a video of firing it up.
Cobra Start Up Video
Cheers
Michael
Thread Starter
On The Tree
Joined: Jun 2004
Posts: 132
Likes: 0
From: Melbourne, Australia
I've reckon got about AU$40K (probably more) in it at the moment and it will end up owing me closer to AU$60K when it's finished and on the road.
Don't tell my wife.
The exchange rate for AU to US is about AU$1.25 = US$1.00
Cheers
Michael
Don't tell my wife.
The exchange rate for AU to US is about AU$1.25 = US$1.00
Cheers
Michael
Looking good, although you apparently messed up and put the steering wheel on the wrong side 
I'd love to hear more/see pics of how you are lanning to mout/route the M112 if ya feel like sharing.
I'd love to hear more/see pics of how you are lanning to mout/route the M112 if ya feel like sharing. Thread Starter
On The Tree
Joined: Jun 2004
Posts: 132
Likes: 0
From: Melbourne, Australia
Look again, the steering wheel is on the Right Side 
I've got a couple of pics of the blower in the rough position it'll be. I've got a lot of machining to do to get it fitted. The blower is from a Ford Lightning pickup. I plan on machining the mounting flanges off the bottom of it and drilling and tapping into the edges and then bolting it on from the underside of the top plate on the manifold. The drive will be 8 rib and I have an 8 rib power bond balancer. I'll swap back to a conventional water pump and drive it off the back of the belt.
The alternator will run off the 4 rib accessory belt behind along with a power steering pump. That's why I've set the alternator back and made an extended pulley. I'll machine up a 4 rib pulley for it that will line up with the rear accessory crank pulley. I'll machine a power steering pulley to match and hopefully there will be enough clearance to mount the pump in the conventional position.
this pic should give you a bit of an idea what it'll look like.
Cheers
Michael
I've got a couple of pics of the blower in the rough position it'll be. I've got a lot of machining to do to get it fitted. The blower is from a Ford Lightning pickup. I plan on machining the mounting flanges off the bottom of it and drilling and tapping into the edges and then bolting it on from the underside of the top plate on the manifold. The drive will be 8 rib and I have an 8 rib power bond balancer. I'll swap back to a conventional water pump and drive it off the back of the belt.
The alternator will run off the 4 rib accessory belt behind along with a power steering pump. That's why I've set the alternator back and made an extended pulley. I'll machine up a 4 rib pulley for it that will line up with the rear accessory crank pulley. I'll machine a power steering pulley to match and hopefully there will be enough clearance to mount the pump in the conventional position.
this pic should give you a bit of an idea what it'll look like.
Cheers
Michael
Yes that blower looks really familiar (I used mto own a Lightning)
Those make a lot of heat(Ford puts an intercooler below them in the Lightning trucks)
Although it's a decent desing I wouldnt use one on a GM motor. The money and time spent on making this one work would be better spent on the right supercharger.
Those make a lot of heat(Ford puts an intercooler below them in the Lightning trucks)
Although it's a decent desing I wouldnt use one on a GM motor. The money and time spent on making this one work would be better spent on the right supercharger.
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Originally Posted by LS1 Cobra
Look again, the steering wheel is on the Right Side
I've got a couple of pics of the blower in the rough position it'll be. I've got a lot of machining to do to get it fitted. The blower is from a Ford Lightning pickup. I plan on machining the mounting flanges off the bottom of it and drilling and tapping into the edges and then bolting it on from the underside of the top plate on the manifold. The drive will be 8 rib and I have an 8 rib power bond balancer. I'll swap back to a conventional water pump and drive it off the back of the belt.
The alternator will run off the 4 rib accessory belt behind along with a power steering pump. That's why I've set the alternator back and made an extended pulley. I'll machine up a 4 rib pulley for it that will line up with the rear accessory crank pulley. I'll machine a power steering pulley to match and hopefully there will be enough clearance to mount the pump in the conventional position.
this pic should give you a bit of an idea what it'll look like.
Cheers
Michael
I've got a couple of pics of the blower in the rough position it'll be. I've got a lot of machining to do to get it fitted. The blower is from a Ford Lightning pickup. I plan on machining the mounting flanges off the bottom of it and drilling and tapping into the edges and then bolting it on from the underside of the top plate on the manifold. The drive will be 8 rib and I have an 8 rib power bond balancer. I'll swap back to a conventional water pump and drive it off the back of the belt.
The alternator will run off the 4 rib accessory belt behind along with a power steering pump. That's why I've set the alternator back and made an extended pulley. I'll machine up a 4 rib pulley for it that will line up with the rear accessory crank pulley. I'll machine a power steering pulley to match and hopefully there will be enough clearance to mount the pump in the conventional position.
this pic should give you a bit of an idea what it'll look like.
Cheers
Michael
Is there an intercooler core inside that intake? Pics?
Andrew
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On The Tree
Joined: Jun 2004
Posts: 132
Likes: 0
From: Melbourne, Australia
No intercooler unfortunately. I'm planning to make one and sandwich it between the blower and the manifold. It'll probably be about 1" high.
I was also thinking about running water/methanol injection. Unfortunately I haven't been able to find a definite answer if injecting water/methanol through the blower will damage it.
I've got some pics of the manifold somewhere. If I can't find them I'll snap a few on the week end.
Cheers
Michael
I was also thinking about running water/methanol injection. Unfortunately I haven't been able to find a definite answer if injecting water/methanol through the blower will damage it.
I've got some pics of the manifold somewhere. If I can't find them I'll snap a few on the week end.
Cheers
Michael
Thread Starter
On The Tree
Joined: Jun 2004
Posts: 132
Likes: 0
From: Melbourne, Australia
I believe this is the company that made the manifold: http://www.forcedairtech.com.au/genkit.htm
Cheers
Michael
Cheers
Michael
Originally Posted by LS1 Cobra
No intercooler unfortunately. I'm planning to make one and sandwich it between the blower and the manifold. It'll probably be about 1" high.
I was also thinking about running water/methanol injection. Unfortunately I haven't been able to find a definite answer if injecting water/methanol through the blower will damage it.
I've got some pics of the manifold somewhere. If I can't find them I'll snap a few on the week end.
Cheers
Michael
I was also thinking about running water/methanol injection. Unfortunately I haven't been able to find a definite answer if injecting water/methanol through the blower will damage it.
I've got some pics of the manifold somewhere. If I can't find them I'll snap a few on the week end.
Cheers
Michael
Andrew
Thread Starter
On The Tree
Joined: Jun 2004
Posts: 132
Likes: 0
From: Melbourne, Australia
I picked up the manifold for the right price but I've been thinking for a while that I might sell the M112 and pick up a Whipple or an Opcon screw blower. They are fairly pricey down here though. I'm going to be in the US in February so I might have to try and find one when I'm there.
If water injection is OK I may forget the intercooler and just run the water injection. From what I've heard it's way more effective than intercooling. It'll also keep my engine bay nice and simple.
Cheers
If water injection is OK I may forget the intercooler and just run the water injection. From what I've heard it's way more effective than intercooling. It'll also keep my engine bay nice and simple.
Cheers
Teching In
Joined: Jun 2005
Posts: 19
Likes: 0
From: Indianapolis, IN
Michael,
That looks great! I'm building an LS2 cobra here in the states - where did you get your headers from? They look like 4 into 4's? I'm looking at making up a set myself, but if an Australian company makes them, I'd take the easy way out and try to import a set.
Thanks, Carl
That looks great! I'm building an LS2 cobra here in the states - where did you get your headers from? They look like 4 into 4's? I'm looking at making up a set myself, but if an Australian company makes them, I'd take the easy way out and try to import a set.
Thanks, Carl
Thread Starter
On The Tree
Joined: Jun 2004
Posts: 132
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From: Melbourne, Australia
Originally Posted by airwrench
Michael,
That looks great! I'm building an LS2 cobra here in the states - where did you get your headers from? They look like 4 into 4's? I'm looking at making up a set myself, but if an Australian company makes them, I'd take the easy way out and try to import a set.
Thanks, Carl
That looks great! I'm building an LS2 cobra here in the states - where did you get your headers from? They look like 4 into 4's? I'm looking at making up a set myself, but if an Australian company makes them, I'd take the easy way out and try to import a set.
Thanks, Carl
Headers are 1 7/8" into 3 1/2" collectors. I made them from individual mandrel bends and TIG welded them together.
The side pipes are re-packable and have cat converters inside them. They sound really good but aren't so loud they deafen you. Open road cruising at 60MPH in 6th gear and you cant even hear them. Stand on it and they bark nicely. I've built a few sets for friends but there's a lot of work in them and unfortunately I haven't got much spare time lately.
Cheers
Michael
Thread Starter
On The Tree
Joined: Jun 2004
Posts: 132
Likes: 0
From: Melbourne, Australia
I cut up some pressed steel Corvette manifolds to make the under body system that's on it at the moment. Much easier than building another set of headers and it'll probably just be on to get through enginnering and rego.
Cheers
Michael
Cheers
Michael
