RevHard turbo manifold - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

BlackFox · 03-21-2002, 01:06 AM

I'll be boosting a KA to around 20psi so I want to get a Tial 40mm wastegate because the springs on the 35mm only go to 16psi. Anyone know the bolt pattern on the RevHard manifold? Is it 2 or 4 bolts, so i know if the 40mm will fit or not.

Thanks

9591 · 03-21-2002, 02:08 AM

Revhard manifold uses a 2-bolt wastegate flange that fits either the Turbonetics Deltagate or the Tial 35mm. The larger Tials won't work, unless you cut off the manifold flange and weld on the one that (I believe) Tial includes with their wastegates.

9591 · 03-21-2002, 02:29 AM

Bonk. That's the sound of the rest of your post finally hitting something solid inside my head. I didn't notice the reason you stated for wanting to use a 40mm. Sure, I noticed the 20psi, and at that amount of boost on a KA, you'd possibly be flowing too much for a 35mm.
But you seemed concerned about the 16psi spring. This suggests to me that you're not planning on using a boost controller, or that you don't understand how boost controllers work. If either of these are accurate, then you probably need to learn a bit more about turbocharging before you boost a KA to 20psi (things can get nasty at that level).
Not a slam, just a friendly suggestion.

BlackFox · 03-21-2002, 10:06 AM

Well, I'm actually reading Maximum Boost right now, it's a great book.  The EBC regulates the pressure returning to the wastegate, so does that mean that I can run higher than the wastegate spring pressure says as long as the EBC can handle it?

Eesshhh.. cut off the flange  <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/nervous.gif" border="0" valign="absmiddle" alt=':nervous:'> does anyone know anything about Kiwi turbo manifolds for the 240? I saw a new product article in Sport Compact Car a couple months ago. It's a big shiny chrome thing.  <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'>  I couldn't seem to find anything online about it so anyone here know anything about it?

9591 · 03-21-2002, 10:02 PM

Yes, a boost controller allows you to raise the boost level to higher than the wastegate spring's rating. You can *only* go higher, though, not lower.

Don't know anything about Kiwi, sorry.

daywalker · 03-22-2002, 02:42 AM

when you order from rev hard they ask what wastegate you will be running. i told them ill be running hks and they welded on the flange for the hks one with no problems

03-21-2002, 01:06 AM	#1
BlackFox Zilvia Junkie Join Date: Feb 2002 Location: San Jose, CA Posts: 534 Trader Rating: (0) Feedback Score: 0 reviews	I'll be boosting a KA to around 20psi so I want to get a Tial 40mm wastegate because the springs on the 35mm only go to 16psi. Anyone know the bolt pattern on the RevHard manifold? Is it 2 or 4 bolts, so i know if the 40mm will fit or not. Thanks __________________ Current Cars: 1976 Mercedes Benz 300D 1995 240sx SE aka Kate (winner: Best Stock S14 @ 2002 National Convention) http://community.webshots.com/user/jeff976cal If you're interested in parts email me [email protected]

03-21-2002, 10:06 AM	#4
BlackFox Zilvia Junkie Join Date: Feb 2002 Location: San Jose, CA Posts: 534 Trader Rating: (0) Feedback Score: 0 reviews	Well, I'm actually reading Maximum Boost right now, it's a great book.  The EBC regulates the pressure returning to the wastegate, so does that mean that I can run higher than the wastegate spring pressure says as long as the EBC can handle it? Eesshhh.. cut off the flange  <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/nervous.gif" border="0" valign="absmiddle" alt=':nervous:'> does anyone know anything about Kiwi turbo manifolds for the 240? I saw a new product article in Sport Compact Car a couple months ago. It's a big shiny chrome thing.  <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'>  I couldn't seem to find anything online about it so anyone here know anything about it? __________________ Current Cars: 1976 Mercedes Benz 300D 1995 240sx SE aka Kate (winner: Best Stock S14 @ 2002 National Convention) http://community.webshots.com/user/jeff976cal If you're interested in parts email me [email protected]

03-22-2002, 02:42 AM	#6
daywalker Leaky Injector Join Date: Mar 2002 Posts: 82 Trader Rating: (0) Feedback Score: 0 reviews	when you order from rev hard they ask what wastegate you will be running. i told them ill be running hks and they welded on the flange for the hks one with no problems __________________ Norbert 91 Eclipse GSX 96 240 SE KA-T http://www.PhatKA-T.com http://www.Sound-Performance.com

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

03-21-2002, 02:08 AM	#2
9591 Leaky Injector Join Date: Feb 2002 Posts: 122 Trader Rating: (0) Feedback Score: 0 reviews	Revhard manifold uses a 2-bolt wastegate flange that fits either the Turbonetics Deltagate or the Tial 35mm. The larger Tials won't work, unless you cut off the manifold flange and weld on the one that (I believe) Tial includes with their wastegates.

03-21-2002, 02:29 AM	#3
9591 Leaky Injector Join Date: Feb 2002 Posts: 122 Trader Rating: (0) Feedback Score: 0 reviews	Bonk. That's the sound of the rest of your post finally hitting something solid inside my head. I didn't notice the reason you stated for wanting to use a 40mm. Sure, I noticed the 20psi, and at that amount of boost on a KA, you'd possibly be flowing too much for a 35mm. But you seemed concerned about the 16psi spring. This suggests to me that you're not planning on using a boost controller, or that you don't understand how boost controllers work. If either of these are accurate, then you probably need to learn a bit more about turbocharging before you boost a KA to 20psi (things can get nasty at that level). Not a slam, just a friendly suggestion.

03-21-2002, 10:02 PM	#5
9591 Leaky Injector Join Date: Feb 2002 Posts: 122 Trader Rating: (0) Feedback Score: 0 reviews	Yes, a boost controller allows you to raise the boost level to higher than the wastegate spring's rating. You can only go higher, though, not lower. Don't know anything about Kiwi, sorry.