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Replacement diverter / bypass valve

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Old 04-04-2005, 11:35 PM
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mroberts
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Default Replacement diverter / bypass valve

Anyone tried these ?

http://cgi.ebay.com/ebaymotors/ws/eB...965019410&rd=1

I'm looking for something <$100 that's an imprevement over stock.
Old 04-04-2005, 11:38 PM
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CPTdooberhead
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Go with a 993TT or a Forge
Old 04-04-2005, 11:40 PM
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Eyal 951
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evo
Old 04-05-2005, 12:22 AM
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lart951
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Originally Posted by mroberts
Anyone tried these ?

http://cgi.ebay.com/ebaymotors/ws/eB...965019410&rd=1

I'm looking for something <$100 that's an imprevement over stock.
Those valves look a lot like the Lindsey racing BOV, I paid $ 199.00 for the freaking thing 2 years ago.
Old 04-05-2005, 12:58 AM
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mroberts
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Is the 993 TT the 993.110.337.50 that Paragon sells ? Is the "stock" 993 one significantly better than the old ones ? I keep hearing how bad the stock ones are, but I'm wondering if the 993 one is good enough to not bother with an aftermarket one.

Can you get a Forge for under $100 - I've usually seen them for about $150

The Lindsey racing ones look nicer.
Old 04-05-2005, 01:27 AM
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Eyal 951
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the 993 one is the same thing, except it has a reinforcement in the diaphram, a bit better, still not adequate imo.
~Eyal
Old 04-05-2005, 01:19 PM
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badass951
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993TT valvle is going to break almost as easily. I say go with the Evolution Motorsports diverter valve. Much stronger unit that looks almost completely stock. I am not sure of anyone selling the Forge anymore.
Old 04-05-2005, 06:02 PM
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dr pepper
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Default Try boost sciences

Been very happy with it:

http://www.boostsciences.com/reflex.html
Old 04-05-2005, 06:50 PM
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testarossa_td
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993 has a brass insert, but can still go bad.
Mine has not but I know someone who's has.
Quick cheap replacement though that will take care of business until you have figured out which you want...or never need depending on your application.
Old 04-05-2005, 06:52 PM
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pikey7
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I've got a LR one, and never had a problem. Make sure you connect it the right way though.
Old 04-05-2005, 07:00 PM
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special tool
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The 993 valve does not hold 28 psi very well.
Old 04-05-2005, 07:05 PM
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Eyal 951
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Jim, all this is on a 993 valve? That means you will probably see some gains (albeit small) with a diverter valve that will seal well? replacing that soon?
~Eyal
Old 04-05-2005, 07:07 PM
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special tool
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Oh, no way man. I was just kidding around.
I use the Forge "R" - adjustable diaphragn with side vacuum port.
Tested about 7 of them - these are the best.
Old 04-05-2005, 07:30 PM
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Eyal 951
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hahaha! Should have known, you wouldn't do everything you do, and cheap out on a diverter valve! I'll just go sulk in the corner for a while now...
~Eyal
Old 04-05-2005, 07:52 PM
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mroberts:

The BOV you posted a link too uses high tolerance machining to achieve the seal. Essentially, it uses a metal on metal seal. As you can imagine, such a seal will wear away with time and short of a new piston, you cannot achieve good sealing again. People try to use excessive grease to "refresh" the valve, but that too fails just as quick. Look for a valve that uses replaceable o-ring seals. Also look for one that has more than 1 seal, to provide a degree of safety. Usually these can be found in the $120-$140 range. The extra 20 to 40 dollars is well worth it to ensure proper operation and a long service life. After all, when the BOV starts to leak, whats it worth to not have to regrease every few thousand miles ?

Here are some suggestions:

Forge
TurboXS
BoostSciences

Regards


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