![]() |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
![]() |
SirAndy |
![]() ![]()
Post
#41
|
Resident German ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Admin Posts: 41,711 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California ![]() |
sooooo, as some of you might know, i have been tinkering with the idea of putting a FI system on my hot cammed 2056 that utilizes a single throttle body and long intake runners (similar to the stock D-Jet setup).
the idea is that long runners promote more low end tourque (gud for AX) and the single throttle body makes tuning *much* easier ... the initial idea was to reproduce the stock 2.0L runners with a larger OD for the bigger displacement engine plus a bigger size (volume) plenum. this proved somewhat difficult and the quotes i got for fabbing such runners where in the $1500 - $2000 range for a "test" set. (IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif) so i consulted a pro, and we came up with a slightly changed attack plan: - short carb intake manifolds with welded on injector bungs - cylindrical plenum on top of the manifolds on each side - horizontal runners to a single center plenum - single throttlebody all sizes/volumes/length/dia. has been worked out to fit engines from ~2056 to ~2270, for bigger engines sizes would have to be changed ... well, so far, the short carb intake manifolds with welded on injector bungs have been finished and they turned out great. i hope the rest will follow soon (mostly held up by $$$ at this point) attached are a few pics of the intakes and a schema of what the complete system will look like ... (IMG:http://www.914world.com/bbs2/html/emoticons/welder.gif) Andy the manifold with the injector bungs welded on: (IMG:http://www.914world.com/bbs2/uploads/post-11-1124689756.jpg) injector angle, pretty much a straight shot at the valve: (IMG:http://www.914world.com/bbs2/uploads/post-11-1124689795.jpg) closeup of the bung: (IMG:http://www.914world.com/bbs2/uploads/post-11-1124689837.jpg) quick photoshop mockup of the layout: (IMG:http://www.914world.com/bbs2/uploads/post-11-1124689719.jpg) |
![]() ![]() |
Katmanken |
![]()
Post
#42
|
You haven't seen me if anybody asks... ![]() ![]() ![]() ![]() Group: Members Posts: 4,738 Joined: 14-June 03 From: USA Member No.: 819 Region Association: Upper MidWest ![]() |
Sor Ahndie,
What I meant was these were kind of like the klingon battle cruiser with the vertical pipes, the small manifolds, the cross pipes and for the turbo, another big manifold in the center (see sketch on photo in link). Also, the turbo shows welded construction of pipes that look like a reasonable size. I can't imagine that fabbing bent pipes would be too hard or too costly. Motorcycle exhaust pipes might be closer in size. Anybody in town make custom headers for bikes? They might have tubing and bending equipment in sizes closer to what you need than auto tailpipe sizes. I have welded one end of a pipe, packed it with sand and welded the other end before bending. Sand prevents the tube from collapsing while you bend. Harbor freight sells tubing benders that would work with that. Another thought. I drive a 2.1L wasserboxer vanagon. Wonder what diameter intake pipes that uses and what size plenum and throttle body. Looks just like a teener. I will try to measure tomorrow. Wnder if I have any batteries for the calipers? Ken |