LS1 Stack Manifold
LS1 Stack Manifold I am planning a flat black Brunton stalker (lotus 7 clone) and the thought of these sticking through the hood is just too tempting not to ask about:
http://store.speedmaster79.com/p-482...ete-satin.aspx
http://store.speedmaster79.com/p-482...ete-satin.aspx
Nice! I didn't see that. At least there are some initial results out there.
Speedmaster used to be Pro-Comp, then Speedmaster79. Now Speedmaster. Cheap off shore copies of quality parts. http://www.coloradospeed.com/buyer-b...er-ezp-88.html Never buy cheap parts, they're too expensive.
Stacks are really cool. But they can be a bit finicky, and need some time and effort to perform correctly. You also have to be very careful about head and cam selection to make them work right. If you want a good set up, contact Wayne Presley at www.verycoolparts.com
I love my stack set up.
Stacks are really cool. But they can be a bit finicky, and need some time and effort to perform correctly. You also have to be very careful about head and cam selection to make them work right. If you want a good set up, contact Wayne Presley at www.verycoolparts.com
I love my stack set up.
I have cast an eight stack 65mm butterfly ITB intake manifold WITH cast in air filters for over ten years.
This has been tested many times with a 50-100 HP increase depending on engine size.
Wayne is one here that is a approved vendor that sell our items from time to time.
The throttle shafts are perpendicular the the crankshaft (eight) with "ball bearings" instead of bushings.
Lance
This has been tested many times with a 50-100 HP increase depending on engine size.
Wayne is one here that is a approved vendor that sell our items from time to time.
The throttle shafts are perpendicular the the crankshaft (eight) with "ball bearings" instead of bushings.
Lance
i bought the china headstuds from them. a couple of them didnt have the hex broached in the end and one of the nuts wasn't threaded. they were nice on the phone and sent replacements---which turned out to arp studs lol.
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Verdad Gallardo No more stupid "China Junk" or china based comments please.
Everything we all own is china junk.
Does it work or not, is the company reputable? Technical things I should know... that's all I care about. My whole car would be china made if it worked and was cheap.
Everything we all own is china junk.
Does it work or not, is the company reputable? Technical things I should know... that's all I care about. My whole car would be china made if it worked and was cheap.
Speedmaster used to be Pro-Comp, then Speedmaster79. Now Speedmaster. Cheap off shore copies of quality parts. http://www.coloradospeed.com/buyer-b...er-ezp-88.html Never buy cheap parts, they're too expensive.
Stacks are really cool. But they can be a bit finicky, and need some time and effort to perform correctly. You also have to be very careful about head and cam selection to make them work right. If you want a good set up, contact Wayne Presley at www.verycoolparts.com
I love my stack set up.
Stacks are really cool. But they can be a bit finicky, and need some time and effort to perform correctly. You also have to be very careful about head and cam selection to make them work right. If you want a good set up, contact Wayne Presley at www.verycoolparts.com
I love my stack set up.
I'm guessing the linkages are the main headache
Yes, the linkage is the big issue. All throttle bodies must open the exact same amount at the exact same time. Initially, I struggled with getting it to work right. Eventually I tossed out the linkage that was supplied with the kit, and built my own. That made a huge difference.
You'll need some special tools to get the balance just right. That's a tedious process, but pays off in huge dividends. I do it about twice a year.
And, no, none of this is cheap Chinese junk. These are high quality parts designed and built right here in the US. The throttle bodies were designed and built here in CO. The ECU was designed and built in the US as well.
There's no room in my garage for cheap Chinese junk.
You'll need some special tools to get the balance just right. That's a tedious process, but pays off in huge dividends. I do it about twice a year.
And, no, none of this is cheap Chinese junk. These are high quality parts designed and built right here in the US. The throttle bodies were designed and built here in CO. The ECU was designed and built in the US as well.
There's no room in my garage for cheap Chinese junk.
Yes, the linkage is the big issue. All throttle bodies must open the exact same amount at the exact same time. Initially, I struggled with getting it to work right. Eventually I tossed out the linkage that was supplied with the kit, and built my own. That made a huge difference.
You'll need some special tools to get the balance just right. That's a tedious process, but pays off in huge dividends. I do it about twice a year.
And, no, none of this is cheap Chinese junk. These are high quality parts designed and built right here in the US. The throttle bodies were designed and built here in CO. The ECU was designed and built in the US as well.
There's no room in my garage for cheap Chinese junk.
You'll need some special tools to get the balance just right. That's a tedious process, but pays off in huge dividends. I do it about twice a year.
And, no, none of this is cheap Chinese junk. These are high quality parts designed and built right here in the US. The throttle bodies were designed and built here in CO. The ECU was designed and built in the US as well.
There's no room in my garage for cheap Chinese junk.
Because I'm assuming it would be a lot worse with these cheaper units.
Another option I found:
inglese makes some nice setups, they also sell only the manifold.
http://www.theefistore.com/index.php...ld-only-detail
Could be a great starting point, some fabrication could mate this manifold to 2 sets of motorcycle ITBs which has been done several times in the import world
inglese makes some nice setups, they also sell only the manifold.
http://www.theefistore.com/index.php...ld-only-detail
Could be a great starting point, some fabrication could mate this manifold to 2 sets of motorcycle ITBs which has been done several times in the import world
On The Tree
Joined: Feb 2014
Posts: 181
Likes: 5
Depending on the level of aggravation you're willing to accept, I'd stay away from the Chinese stuff and/or building your own. Tolerances, materials, etc will be far less than the players (Harrop, Jenvey, Kinsler). Though I'm not sure if Harrop does a "stack" style in the end, you get what you pay for applies.
Think about provisions for MAP, IAC too. Bob touched on some of the tuning pains in getting them set up. Blade synchronization, blade sizes (again, going back to tolerance), blade position at idle, linkage adjustability, etc....other than that, slap a fat cam in and enjoy the throttle response.
Think about provisions for MAP, IAC too. Bob touched on some of the tuning pains in getting them set up. Blade synchronization, blade sizes (again, going back to tolerance), blade position at idle, linkage adjustability, etc....other than that, slap a fat cam in and enjoy the throttle response.
ITB Throttle Sync & Balance Passage Hi Bob, you are correct with your report for quality linkage needed for good "sync".
My LS-1/7 ITB eight stack uses 65mm butterflies made of .080" thick Brass ALSO needed for GOOD closed throttle air control. (Low Idle RPM)
Your next concern was solved using my method of positioning the throttle shafts perpendicular to the crankshaft all mounted on "ball" bearings.
There are ONLY two, L & R, linkage bars set when assembled with little chance for miss-alignment or future adjustment.
Thus the only "sync" is for the Left & Right banks which is quite simple to get correct.
The castings ALSO address another concern of yours, the AIR BALANCE, by a provision of a 5/8" bore passage way to provide EVEN air distribution under the butterfly AND easy ability to connect that passage to MAP, VAC, etc. (OVRKILL reply)
Lance
My LS-1/7 ITB eight stack uses 65mm butterflies made of .080" thick Brass ALSO needed for GOOD closed throttle air control. (Low Idle RPM)
Your next concern was solved using my method of positioning the throttle shafts perpendicular to the crankshaft all mounted on "ball" bearings.
There are ONLY two, L & R, linkage bars set when assembled with little chance for miss-alignment or future adjustment.
Thus the only "sync" is for the Left & Right banks which is quite simple to get correct.
The castings ALSO address another concern of yours, the AIR BALANCE, by a provision of a 5/8" bore passage way to provide EVEN air distribution under the butterfly AND easy ability to connect that passage to MAP, VAC, etc. (OVRKILL reply)
Lance
Last edited by pantera_efi; Mar 2, 2016 at 12:26 PM. Reason: missspelling
And that's what you're paying "extra" for, IMO. That kind of precision is what makes the difference. Sloppy work and specs make it difficult - if not impossible - get the engine to perform as it should. Quality components bolt on and work with minimal hassle, and still work 10 years later. Cheap stuff...........
Never buy cheap parts. They're too expensive.
Lance, you need to work on your web site a bit. You need more pics of cool stuff.
Never buy cheap parts. They're too expensive.
Lance, you need to work on your web site a bit. You need more pics of cool stuff.