what do i need....., for a new engine with carbs? |
|
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. |
|
what do i need....., for a new engine with carbs? |
scottb |
Jun 10 2006, 02:04 PM
Post
#1
|
who wants a PEZ?! Group: Members Posts: 1,993 Joined: 27-December 02 From: south-(not north)-wick, MA Member No.: 32 Region Association: North East States |
my $5k engine is going to have carbs. my current is FI.
so i know i need to cap off the fuel return, do a jumper on the fuel pump for constant pressure.... what else? is there a definitive list? i would like to make this as painless as possible so when the motor arrives, i have made the needed changes or modifications to ease things along. i will keep a list of comments and ultimately post what i am told and what i find to work for future folks making the changes.... thanks in advance... (IMG:style_emoticons/default/beer3.gif) (IMG:style_emoticons/default/beer3.gif) (IMG:style_emoticons/default/beer3.gif) |
brant |
Jun 10 2006, 02:08 PM
Post
#2
|
914 Wizard Group: Members Posts: 11,739 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
you'll have to change fuel pumps to one with a much lower operating pressure/volume.
carbs like 3-5psi, unlike the 30psi that your current pump puts out... ...Fire! plus get a decent regulator (or a cheap one with a decent guage to make sure it is working) also, for the 999th time.. why cap the return a recirculatory fuel system is better, and more powerful for any engine wether it be f.i. or carbed. brant |
Aaron Cox |
Jun 10 2006, 02:11 PM
Post
#3
|
Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
CBperformance.com
buy the 200 buck 914 linkage kit. Tall manifolds, best linkage.... it is the cats meow.... the bees knees... pics in my blog. also.. BUY the internally regulated 3.5PSI rotary pump they sell. THE best investment..... i finally bought one... AA |
scottb |
Jun 10 2006, 02:20 PM
Post
#4
|
who wants a PEZ?! Group: Members Posts: 1,993 Joined: 27-December 02 From: south-(not north)-wick, MA Member No.: 32 Region Association: North East States |
QUOTE BUY the internally regulated 3.5PSI rotary pump they sell. THE best investment..... cbperformance lists 2 pumps...rotary pump 5 and rotary pump 3.... which one? cheers.... scott |
Aaron Cox |
Jun 10 2006, 02:21 PM
Post
#5
|
Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
3 PSI
|
rhodyguy |
Jun 10 2006, 08:51 PM
Post
#6
|
Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,188 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
scott, didn't you look at my triad linkage? spend a bit more money, and your linkage kit will also include a throttle cable holder(not incl/w cb). cb pump. andy's jumper trick, you'll need to rig up a little harness. mallory centrifical dist and blaster coil. aurora 8.5mm plug wires, i got mine at aircooled.net. the plug end bootseals are correct for our engines. you might need to call as they weren't listed on the site. you'll have to figure out some sort of case venting system. i have the pukey breather box that is supposed to drain back to the head vents. i hate it. your engine gets covered in dust and grime from the oil vapor due to the design. heat or headers?
k |
McMark |
Jun 10 2006, 11:21 PM
Post
#7
|
914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Don't buy a linkage. (IMG:style_emoticons/default/wink.gif) I'll take a picture tomorrow. (IMG:style_emoticons/default/wink.gif) (IMG:style_emoticons/default/wink.gif) (IMG:style_emoticons/default/wink.gif)
|
So.Cal.914 |
Jun 11 2006, 12:01 AM
Post
#8
|
"...And it has a front trunk too." Group: Members Posts: 6,588 Joined: 15-February 04 From: Low Desert, CA./ Hills of N.J. Member No.: 1,658 Region Association: None |
I would sudjest K&N's air cleaners, your rings will thank you.
|
scottb |
Jun 11 2006, 06:19 AM
Post
#9
|
who wants a PEZ?! Group: Members Posts: 1,993 Joined: 27-December 02 From: south-(not north)-wick, MA Member No.: 32 Region Association: North East States |
thanks for linkage suggestions guys.... i did however buy the linkage that mark recommended which he ordered for me. what it is i can recall though.... (IMG:style_emoticons/default/huh.gif)
mark also ordered the mallory dizzy for me and i sent him my crane ignition to put in. will score a new coil and some wires.... fuel pump has been ordered.... now what next........ (IMG:style_emoticons/default/idea.gif) |
lotus_65 |
Jun 11 2006, 06:49 AM
Post
#10
|
Senior Member Group: Members Posts: 1,608 Joined: 21-March 05 From: minneapolis, mn Member No.: 3,795 Region Association: Northstar Region |
patience
|
DNHunt |
Jun 11 2006, 06:51 AM
Post
#11
|
914 Wizard? No way. I got too much to learn. Group: Members Posts: 4,099 Joined: 21-April 03 From: Gig Harbor, WA Member No.: 598 |
Hey Scott
How you doing? I think we saw your engine when we were at Mark's in Napa a couple of weeks ago. It should be nice. Dave |
scottb |
Jun 11 2006, 08:49 AM
Post
#12
|
who wants a PEZ?! Group: Members Posts: 1,993 Joined: 27-December 02 From: south-(not north)-wick, MA Member No.: 32 Region Association: North East States |
hey dave.... read your cali fun-run thread. sounds like a blast. now if i could just get a job in seattle..... hmmmmmm
===== should i get new motor and or trany mounts since i have things apart? i have solid tranny mounts and i don't imagine they go bad but..... cheers.... |
rhodyguy |
Jun 11 2006, 08:53 AM
Post
#13
|
Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,188 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
get new fronts scott. no better/easier time to do it. the bird sells the new outers for around $14? a pop. if yours are all bent up, scrap em'. the new ones are all fancy anodized.
k |
rhodyguy |
Jun 11 2006, 01:18 PM
Post
#14
|
Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,188 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
also, i mounted my cb pump on the outside of the rear firewall. direct access to the stock fp harness, leading to the relay board, making the "andyjumper" install a breeze. no need to pull wires and having to run the pump off of a keyed fuse on the fuse panel. be careful, powering off the panel can result in popping fuses. usually at the worst possible time. when i bought my cb, the instructions warned against installing the pump in trunks.
k |
scottb |
Jun 12 2006, 04:06 PM
Post
#15
|
who wants a PEZ?! Group: Members Posts: 1,993 Joined: 27-December 02 From: south-(not north)-wick, MA Member No.: 32 Region Association: North East States |
and another question.... what can i take away?
imagine i can lose a some electronics..... got a list? cheers........ |
lapuwali |
Jun 12 2006, 04:28 PM
Post
#16
|
Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
You'll be removing the stock ECU and the entire engine wiring harness, which you can replace with one wire from the relay board to the coil (black wire, 18g is good enough).
What you'll need while driving the car with this engine is a shorter flat-blade screwdriver, and some practice on removing the idle jets with everything in the car. You'll do this fairly regularly to clean junk out of those jets. If you drain and carefully clean your gas tank and fit a new fuel filter along with that new pump, you'll reduce the need for this somewhat. I did all of this, and still had to clean out one idle jet this weekend on a long drive. |
rhodyguy |
Jun 13 2006, 08:02 AM
Post
#17
|
Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,188 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
after a bit of pratice you'll be able to pull the idles in about 2 minutes each. remove the fi wiring completely. alt loom stays put. even if a jet fouls, you'll be able to limp home if you don't want to do a road side fix. i'm going to look into one of those small micron, cleanable fiters. if your tank is clean and you're still plugging jets, there is debris in the carb bowls. a little can of compressed air (the kind you blow off the computer keyboard with) is nice to have in the tool box. beats the hell out of sticking a gassy jet in your mouth to blow the crap out. before you install the carbs, if they aren't new, check the idle/air mix screw needles for groves worn into them and inspect the little o-rings that seal the i/a mixture screws and the idle jet holders. these 2 issues can have you chasing tunning problems.
k |
Lo-Fi Version | Time is now: 27th September 2024 - 02:25 PM |
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 ... |