 Does anyone run 6" airfilters on IDF carbs in a 914, its gonna be close... |
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| Aaron Cox |
 Apr 29 2006, 05:37 PM
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#1
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Professional Lawn Dart  Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California  |
so i have CB tall manifolds, 44 IDF webers and the cast (thick) Aluminum linkage from CB.
i currently have the 3.5" tall IDF air filters. got a set of six inch ones for a project.... i measured from the top of the base plate (where the filter sits) to the trunk... lip of the trunk and get just a tad under 7". it is gonna be close.... with the rainhats on top and with a wing nut, i think it will be extremelu tight..... the carbs JUST miss the ribs on the engine lid.... obviously no rain tray..... so has anyone done this? AA |
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| rhodyguy |
Apr 29 2006, 05:47 PM
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,075 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
put them on and close the lid very hard. are you still fiddling with your carbs?
k |
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| nebreitling |
Apr 29 2006, 05:49 PM
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Member Emeritus Group: Members Posts: 3,314 Joined: 26-March 03 From: San Francisco Member No.: 478 |
hey dood
i don't think they'll fit exactly because of the rear trunk -- not the engine lid. i've got custom foam jobbies that are around 6" tall, and because of the offset of the cylinders, one filter has to be a bit shorter than the other or else it'd hit the the rear trunk thing that angles down. give it a shot, tho -- the problem will be getting them on and off... |
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| Gint |
Apr 29 2006, 06:15 PM
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#4
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Mike Ginter Group: Admin Posts: 16,070 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains  |
QUOTE(Aaron Cox @ Apr 29 2006, 05:37 PM)  the carbs JUST miss the ribs on the engine lid.... obviously no rain tray..... so has anyone done this? AA Nope. Type IV motor moves around an awful lot... but you already know that. (IMG:style_emoticons/default/blink.gif) (IMG:style_emoticons/default/wacko.gif) |
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| Aaron Cox |
Apr 29 2006, 06:52 PM
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#5
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
QUOTE(Gint @ Apr 29 2006, 05:15 PM) QUOTE(Aaron Cox @ Apr 29 2006, 05:37 PM) the carbs JUST miss the ribs on the engine lid.... obviously no rain tray..... so has anyone done this? AA Nope. Type IV motor moves around an awful lot... but you already know that. (IMG:style_emoticons/default/blink.gif) (IMG:style_emoticons/default/wacko.gif) solid trans mounts.... it dont move. |
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| Aaron Cox |
Apr 29 2006, 06:53 PM
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#6
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
QUOTE(nebreitling @ Apr 29 2006, 04:49 PM) hey dood i don't think they'll fit exactly because of the rear trunk -- not the engine lid. i've got custom foam jobbies that are around 6" tall, and because of the offset of the cylinders, one filter has to be a bit shorter than the other or else it'd hit the the rear trunk thing that angles down. give it a shot, tho -- the problem will be getting them on and off... dang. i measure the left side..... i think you are right.... hummmm we will see. |
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| John |
Apr 30 2006, 03:09 AM
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#7
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
We had 6" tall air cleaners on our car when it was a /4 (14+ years ago).
I'm not sure about the tall manifolds though. On our car, we only had the cast aluminum tops not water shields. We had tall velocity stacks (reason for having the 6" filters). We had no problems with them fitting under the engine lid with no rain tray (it was close as I recall). Why are you going to the 6" air cleaners? |
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| Andyrew |
Apr 30 2006, 12:07 PM
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#8
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Spooling.... Please wait Group: Members Posts: 13,376 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California 
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You dont need no stinkin ribs on your lid....
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| Aaron Cox |
Apr 30 2006, 03:43 PM
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#9
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
QUOTE(JOHNMAN @ Apr 30 2006, 02:09 AM) We had 6" tall air cleaners on our car when it was a /4 (14+ years ago). I'm not sure about the tall manifolds though. On our car, we only had the cast aluminum tops not water shields. We had tall velocity stacks (reason for having the 6" filters). We had no problems with them fitting under the engine lid with no rain tray (it was close as I recall). Why are you going to the 6" air cleaners? got some custom spun aluminum stacks from "spunone" i think they will fit. im going to have to modify the back of the right rain hat...... AA |
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| Aaron Cox |
May 6 2006, 08:54 PM
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#10
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
UPDATE -
so i went to the shop. 6" filters in hand.... left one wont be a problem, with the tall manifolds, rain hats will need slight mod. on to the right..... to my dismay, the right one interferes with the bulkhead.... UGH! so trying to find out what to do.... tall manifolds make tuning way easier.... and i need these tall filters to fit the custom spun stacks.... humm... 2 choices..... 1) modify bulkhead? (less than appealing..... 2) lower engine? .5" spacers maybe? lower cg LOL what do you think. cant "trim" k and n style filters, hummmm |
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| So.Cal.914 |
May 7 2006, 01:51 AM
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"...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 was running the 6" K&N's with out the raintray. For the offset I ovaled the
mounting holes on the filter base and sild it forward about 5/16 " and it didn't rub. Most inportantly it didn't leak. (IMG:style_emoticons/default/smoke.gif) |
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| BarberDave |
May 7 2006, 04:56 AM
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#12
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Barberdave Group: Members Posts: 1,605 Joined: 12-January 03 From: Wauseon Ohio Member No.: 135 Region Association: Upper MidWest |
Same set up. I am going to trim back of passenger rain hat ,mine are red,so some red tape carefully applied to the rain hat will be flexable and still shed water. Altho I really don't expect that to be a problem that far back in the engine compartment. also lost rain tray. Dave |
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| URY914 |
May 7 2006, 06:18 AM
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#13
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I built the lightest 914 in the history of mankind. Group: Members Posts: 120,486 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
Are you using tall manifolds and tall stacks? Like these?
My engine builder tells me those tall stacks rob horsepower so I took them off. He said the best is short manifolds and short stacks. Attached image(s) 
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| rhodyguy |
May 7 2006, 09:41 AM
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#14
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,075 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
paul, the "builder" told you to go with the short intakes? how tall are your stacks? many questions for me when the new 2056 stuff arrives. i guess it's the same old "what do you plan to do with the car?". is it because you want lots of bottom end for a-xing? i hope the guy who designed my heads will give me some insight.
k |
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| URY914 |
May 7 2006, 10:36 AM
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#15
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I built the lightest 914 in the history of mankind. Group: Members Posts: 120,486 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
QUOTE(rhodyguy @ May 7 2006, 07:41 AM) paul, the "builder" told you to go with the short intakes? how tall are your stacks? many questions for me when the new 2056 stuff arrives. i guess it's the same old "what do you plan to do with the car?". is it because you want lots of bottom end for a-xing? i hope the guy who designed my heads will give me some insight. k My builder (Jake (IMG:style_emoticons/default/biggrin.gif) ) says go with the shortest manifolds and stacks I can find. Racer Chris actually cut a section out of a set of manifolds and welded the flange back on to get them shorter. My stacks now are the +/- 2" stacks that came with the carbs. Now were not talking huge numbers of HP and torque here but it all helps. |
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| rhodyguy |
May 7 2006, 10:43 AM
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#16
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,075 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
my tunning will be aimed more at freeway running and hopefully a gas milage increase. a-xing performance is very low on the totem pole.
k |
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| Aaron Cox |
May 7 2006, 01:27 PM
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#17
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
QUOTE(URY914 @ May 7 2006, 09:36 AM) QUOTE(rhodyguy @ May 7 2006, 07:41 AM) paul, the "builder" told you to go with the short intakes? how tall are your stacks? many questions for me when the new 2056 stuff arrives. i guess it's the same old "what do you plan to do with the car?". is it because you want lots of bottom end for a-xing? i hope the guy who designed my heads will give me some insight. k My builder (Jake (IMG:style_emoticons/default/biggrin.gif) ) says go with the shortest manifolds and stacks I can find. Racer Chris actually cut a section out of a set of manifolds and welded the flange back on to get them shorter. My stacks now are the +/- 2" stacks that came with the carbs. Now were not talking huge numbers of HP and torque here but it all helps. i habe the stock 2.5" weber spun stacks... spunone is making me some 3" "tulip stacks" like he made for mueller. so i i needed a little height. i mentioned all this above.... |
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| rhodyguy |
May 7 2006, 01:36 PM
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#18
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,075 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
perhaps i missed it. where is the data that shows the perfomance increase with the tall vel stacks arron? do you believe the shorter air filters restricted flow?
k |
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| Aaron Cox |
May 7 2006, 01:37 PM
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#19
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
QUOTE(rhodyguy @ May 7 2006, 12:36 PM) perhaps i missed it. where is the data that shows the perfomance increase with the tall vel stacks arron? do you believe the shorter air filters restricted flow? k not size, mostly "shape" look at a tulip velocity stack vs a stock one. lots of info on google, and take a look at muellers stacks. if anything it looks cool too (IMG:style_emoticons/default/smile.gif) |
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| rhodyguy |
May 7 2006, 01:45 PM
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#20
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,075 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
do they come with xray-specs so you can see them thru the filters?(IMG:style_emoticons/default/wink.gif) why would i want to google when you have the info? or are you super busy?
k |
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