Anyone try replacing the ribbed intake hose with Silicone Hose? - LotusTalk - The Lotus Cars Community
 
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post #1 of 11 (permalink) Old 12-25-2008, 09:10 PM
qball
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Anyone try replacing the ribbed intake hose with Silicone Hose?

After installing the TRD/Sport Cup intake housing, the ribbed intake hose connecting the filter box with the throttle body required some finagling to get it to fit. Plus... I never much cared for the crappy clamps that Lotus used to connect the ribbed intake hose.

I was thinking of using a slightly longer piece of 3" ID High-temp silicone intake hose and some proper T-bolt clamps...

However I am thinking the intake hose is ribbed to allow for flex between engine movement and the filter box which is fixed to the firewall.

Your thoughts?

Q
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post #2 of 11 (permalink) Old 12-25-2008, 09:37 PM
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Q- I'm darn certain you won't see any power increase just be replacing the ribbed part, but that doesn't mean the part isn't worth replacing

I use a "hump hose". Here are some links that may be useful. I put a link to the joiner just incase you need two hump hoses for the length... I use just one but I'm not using an airbox either...

Best,

Phil


Hump Hose Coupler

T Band Clamp

Turbo Piping


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Last edited by turbophil; 12-25-2008 at 09:59 PM.
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post #3 of 11 (permalink) Old 12-25-2008, 09:44 PM
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It is 2.75" on the aibox side and 3" on the throttlebody. Yes I'm using silicone and t-bolt clamps. I'm trying to find a transition in those sizes but with enough length. All the 2.75-3" transitions I find are 6" or less I need 7"+ because of how I mounted my cupbox. I'll let you know if I find anything. Don't expect it to make any more power, but it is TONS easier to do filter changes.
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post #4 of 11 (permalink) Old 12-25-2008, 09:54 PM
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Edit: Duh! Turbophil... just realized you posted the same thing as below (but cheaper). lol



Hmm... Samco makes a hump connector, and some some internal joiners... and a 3" to 2.75" reducer...

post #5 of 11 (permalink) Old 12-26-2008, 01:10 AM
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Would this do anything to smooth out the airflow through this area? Not looking at any real HP gains but just smoohter air intake, and smoother engine running.
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post #6 of 11 (permalink) Old 12-29-2008, 07:08 PM
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Well, I got the parts in...

3" to 2.75" with the hump connector on one end (for bending), and a stainless joiner internally...

Like $40 for everything...

this otta be good for at least 15 HP...
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post #7 of 11 (permalink) Old 12-29-2008, 07:20 PM
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Cool. You get them from the place I pointed to or else where? I wish I could remember who told me about those guys (someone on this forum I think?). I've ordered a few bits from them myself with great luck...

Now you just need to add a set of plug wires and a K&N filter and you'll be up another 30bhp or so. I've heard great things about Splitfire plugs too, although I haven't seen any dynos to substantiate the 10whp they claim... I bet they work though... I LMAO off at all the guys running superchargers just to get to the same spot intake couplers, KN filter, plug wires, and plugs will gut us!

Best,

Phil


Phil: NASA 2012 and 2014 TT1 Central Champion, 2005 GG Elige, Rev400, 485+whp REV X

2011 Pearl White Evora, BOE Skunk Works 6 SPD 435WHP || 2014 Black Evora Skunk Works IPS 390WHP|| 2011 White Evora Skunk Works IPS 390WHP || 2006 CO Elise, Rev400, Steet Car

____________________________________________

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post #8 of 11 (permalink) Old 12-29-2008, 07:37 PM
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Yep, I used the place you recommended. Fast service.
post #9 of 11 (permalink) Old 12-30-2008, 03:13 PM
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engine bay pics?

05 NFB Elise / Katana SC / No Snorkle / 3.2 "10" psi pulley / Stage 1 Exhaust / Decat / Green Filter RIP
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post #10 of 11 (permalink) Old 12-30-2008, 03:42 PM
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post #11 of 11 (permalink) Old 01-01-2009, 12:02 AM
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If anyone wants to part with their stock intake hose, shoot me a PM with how much you want for it. I've been looking for one so that I can put my car back to stock when I need to take my car in for the dreaded CA smog check.


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