HIGH EFFICIENCY STAINLESS EXH. MANIFOLD-GROUP BUY - LotusTalk - The Lotus Cars Community
 
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Old 01-19-2013, 12:22 PM   #1 (permalink)
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HIGH EFFICIENCY STAINLESS EXH. MANIFOLD-GROUP BUY

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Exhaust manifold design test result.. - Esprit Chat - The Lotus Forums
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Old 01-19-2013, 05:22 PM   #2 (permalink)
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Beautiful piece. I tried to register on Lotusforums to ask some questions, but the new user registration form appears to be broken. The code runs into an error during the registration. Tried it with different browsers, same result.

The unit seems to be optimized for a very high state of tune, over 400hp. I wonder how well this would work with a stock 285hp Esprit engine? The discussion mentioned an earlier thread about the price, but I couldn't find that thread. How much are they asking?
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Old 01-19-2013, 07:11 PM   #3 (permalink)
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I found the original Dec 4 thread, here is a link carsalesman...

Alunox 321 Stainless Steel replacement Manifold - Induction/Turbo/Chargecooler/Manifold/Exhaust - The Lotus Forums

looks like if group of 10 it is 850 pounds - which at current exchange rate is around $1351.50, and figure a couple of hundred to ship it.

In the other thread, it sounded like the price was somewhat still up in the air.

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Old 01-19-2013, 07:33 PM   #4 (permalink)
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I will have a header available this srping when I remove my engine, along with a Stebro Exhust system. I will also be selling a stock cast manifold that has no cracks and is in perfect condition. The Header I have was the prototype for the Al B. Header.
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Old 01-19-2013, 11:07 PM   #5 (permalink)
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When the original group buy was attempted, at the end of last November, these were the approx. delivery costs being quoted:

Idaho 58
Colorado 50
Florida 58
Sweden 40
Isle of Man 24
Jersey 24

Also, if 30 buyers could be found the price would drop to 715. A deposit of 50% was to be payable upon the initiation of the group buy with Alunox. I have no idea if these prices and terms are going to be the same now.

The manifold also comes with all gaskets, studs and nuts.
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Old 01-20-2013, 10:07 AM   #6 (permalink)
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Quote:
Originally Posted by CarSalesman View Post
The unit seems to be optimized for a very high state of tune, over 400hp. I wonder how well this would work with a stock 285hp Esprit engine? The discussion mentioned an earlier thread about the price, but I couldn't find that thread. How much are they asking?
There's no way to know that by looking at an external picture. Comparing to similar manifolds on other cars, it's probably a slight performance gain at stock levels and even more of a benefit with bigger turbos and more boost. Either way, it looks like a really nice piece to replace a cracked stock manifold with. You just need to make sure that you are supporting the weight of the turbo somehow instead of just letting it hang on the header.
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Old 01-20-2013, 10:24 AM   #7 (permalink)
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You cannot see it properly from the photograph above but there is a support on the far side of the turbo flange that uses an adjustable phosphor bronze rod end brace that connects to a gearbox bell housing bolt. Here's a better view of it http://www.thelotusforums.com/forums...ttach_id=22428

It's been confirmed that the group buy price for 10+ manifolds still stands at 850.
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Old 01-20-2013, 05:00 PM   #8 (permalink)
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Shill - my comment about being optimized for way above stock output, is based on the discussion at the beginning of the thread, testing, etc. I was not speaking about appearance, I have no knowledge in that area.
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Old 01-21-2013, 07:36 PM   #9 (permalink)
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This design features Burns double slip joint (prevents cracking caused by thermal expansion of the primaries).

This manifold design adds TQ at the lower end, see below.
What was achieved was 38lb-ft more torque...What was more impressive was at 4500rpm we are generating 64lb-ft more torque, along with a much quicker and aggressive spool up. The power came up quicker and did not drop off at the top. All of this is due to the change in manifold design nothing else had been done since the last dyno run..... This was a detailed test at an extreme level to assess the full design capabilities of the Alunox manifold. I am confident it covers all the bases and will provide performance benefits to anyone who fits it.
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Old 01-22-2013, 05:14 AM   #10 (permalink)
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Does that 850 price include the VAT tax in the UK? I don't think we would have to pay that here in the states which could knock off a few bucks...especially given the exchange rate.
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Old 01-22-2013, 06:42 AM   #11 (permalink)
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The 850 is including VAT but excluding delivery.
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Old 01-22-2013, 08:26 AM   #12 (permalink)
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Would we subtract VAT?
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Old 01-22-2013, 08:16 PM   #13 (permalink)
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Wow, those dyno graphs are extremely impressive for one of these, lot of extra hp and torque right in the sweet spot. Looks like a very well-built piece.
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Old 01-22-2013, 08:43 PM   #14 (permalink)
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Would we subtract VAT?
Yeah, you don't pay VAT. But pay any tariffs.
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Old 01-23-2013, 06:41 AM   #15 (permalink)
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Is this unit applicable for early turbos? Mine is an '83. In addition, if the group buy is met, was there a production lead-time given? Thx.
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Old 01-23-2013, 07:27 AM   #16 (permalink)
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Early turbos had external wastegates, so this manifold will not work.
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Old 01-23-2013, 11:28 AM   #17 (permalink)
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Hi All-

Since there are more US people here...I will post here since it would apply more to us.

I seem to always have a tough time figuring these international orders...

So if I am correct...

850 minus vat...plus 65 for shipping would equal $1449 in US dollars.

How much would I subtract for the VAT tax so I would be able to figure out the total cost...I am interested for sure but it will depend on the cost.

Thanks.
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Old 01-23-2013, 12:37 PM   #18 (permalink)
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VAT is 20% in the UK.

As mentioned above, you would have to pay import duty at 2.5% (for an car exhaust part) plus a 'handling charge' from the shipping company.
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Old 04-11-2013, 04:36 PM   #19 (permalink)
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What ever happened to this group buy on the tubular exhaust manifold? Did it go through or was it not really a group buy but rather a special price offered on a one time deal?
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Old 04-11-2013, 05:15 PM   #20 (permalink)
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are these still available at the discount price?
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