Acc. Pump volume question, Dellortos |
|
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. |
|
Acc. Pump volume question, Dellortos |
type11969 |
Mar 30 2007, 07:21 AM
Post
#1
|
Senior Member Group: Members Posts: 1,231 Joined: 2-December 03 From: Collingswood, NJ Member No.: 1,410 Region Association: North East States |
I'm trying to get my Dell 40s set up properly and I'm currently adjusting the pump volume. In the dell tech manual it states that .4-.5ccs should be released for every two throttle pulls for a 1600cc engine. I can only get ~.2ccs for two throttle pulls at max pump stroke. Would changing the pump jet actually change the volume? I don't see how it would. I'm running a 45 for a pump jet, certainly open to suggestions! Also, suggestions regarding how much more pump volume I should be pushing for an 1800cc, pretty mild with 8.2:1 CR and a web 86 over the .4-.5ccs for a 1600?
Thanks, Chris |
BMartin914 |
Aug 2 2007, 07:43 PM
Post
#2
|
||| Group: Members Posts: 1,408 Joined: 30-May 04 From: Oregon Member No.: 2,128 Region Association: Pacific Northwest |
.4cc to .5cc sounds about right (.4cc to .45cc is the volume for a Solex 40).
That volume is per "barrel", two strokes of the pump. We use a very small graduated cylinder that fits down into the "barrel" and under the nozzle. Small incremental changes can make a huge difference in performance too. |
Lo-Fi Version | Time is now: 26th September 2024 - 11:57 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |