 What is the best size tb's |
|
|
|
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. |
|
|
  |
| bug man nrg |
 Mar 17 2006, 07:05 PM
Post
#1
|
|
Member  Group: Members Posts: 66 Joined: 17-September 05 From: florida Member No.: 4,811  |
What is the best size throttle body's for your type4 40-42 -44-45 or bigger (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) and why?
|
   |
 
|
| lapuwali |
Mar 17 2006, 07:06 PM
Post
#2
|
|
Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
Depends on how big a Type 4, what cam is being used, etc. It's part of a combo (as Jake says). You generally want the smallest throttles that will flow as much air as the engine can use. Throttles that are too big give poor response.
|
|
|
|
| Aaron Cox |
Mar 17 2006, 07:34 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 |
i heart jenvey (IMG:http://www.914world.com/bbs2/html/emoticons/wub.gif)
|
|
|
|
| Twystd1 |
Mar 17 2006, 09:55 PM
Post
#4
|
|
You don't want to know... really..... Group: Members Posts: 2,514 Joined: 12-September 04 From: Newport Beach, California Member No.: 2,743 |
What Lapuwali said.
Hi Mack, I was thinking that the vast majority of fellas here have close to stock engines. Therefore I am going to guess that 40s would be appropriate for most of the 914s here. For the HiPo guys like Brant, Richard and others. I would think the sky is the limit. Me? For my next build. i think 44s or 45s will be appropriate. And how are getting along with Jake? (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) Clayton |
|
|
|
| JeffBowlsby |
Mar 17 2006, 10:05 PM
Post
#5
|
|
914 Wiring Harnesses Group: Members Posts: 8,486 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
|
45mm is the stock 2.0 TB size.
|
|
|
|
| Twystd1 |
Mar 17 2006, 10:13 PM
Post
#6
|
|
You don't want to know... really..... Group: Members Posts: 2,514 Joined: 12-September 04 From: Newport Beach, California Member No.: 2,743 |
Jeff, you made me think.
Mack is a Jennvey dealer. I was thinking Jennvey ITBs. Not TBs. Thanks........ Mack, do you mean ITBs or single throttle bodys? |
|
|
|
| bug man nrg |
Mar 17 2006, 10:43 PM
Post
#7
|
||
|
Member Group: Members Posts: 66 Joined: 17-September 05 From: florida Member No.: 4,811 |
1.a single body 45-65mm 2.throttle body's 40-52mm here is where i an going with this i am looking to do a set of itb's with manifolds linkage and filters for the air cooled market but some of the set up's i see out htere are a bit high on the price (IMG:http://www.914world.com/bbs2/html/emoticons/sad.gif) I have no problem with Jake we had a chat on the phone and it is all good (IMG:http://www.914world.com/bbs2/html/emoticons/rolleyes.gif) |
||
|
|
|
||
| reddog |
Mar 17 2006, 11:20 PM
Post
#8
|
|
Member Group: Members Posts: 71 Joined: 19-December 05 From: Willits, California Member No.: 5,299 |
X-cuse me, I made a mistake... BTW you are a COX (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) back at ya
|
|
|
|
| Aaron Cox |
Mar 17 2006, 11:21 PM
Post
#9
|
||
|
Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
how is that remotely related/appropriate for this thread? post a topic in the garage asking that (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) |
||
|
|
|
||
| Mueller |
Mar 18 2006, 12:39 AM
Post
#10
|
|
914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
|
For the motor that I "was" building, a 2100cc with special Raby cam, stock 2.0 heads...Jake said my 45mm individual throttle bodies would be fine...
From what I've read, you can almost always run smaller ITB's than carbs on the same motor due to the less restriction of the ITB's |
|
|
|
| bug man nrg |
Mar 18 2006, 06:13 AM
Post
#11
|
||
|
Member Group: Members Posts: 66 Joined: 17-September 05 From: florida Member No.: 4,811 |
yes you are right this is the case for most cars that have a oem ecu .there is also the fact that air cooled engine do not come with more than 8.5:1 CR this also will determin what size itb you might need to make the power |
||
|
|
|
||
| Jake Raby |
Mar 18 2006, 08:10 AM
Post
#12
|
|
Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
TIV engines don't like and don't need a ton of intake charge..
Most of my 2270cc engines run a 40mm T/B I run 42mm on the 2316 for up to 7,000 revs..... 45mm if the engine is good for more than that. 45mm will feed up to a 2615 without issues. Beyond that depending on rev range I go with 48s. Some engines like differing sizes due to cam, efficiency and exhaust system. All that charge going in is no good if 80% of it can be exhausted.. The Mighty Spyder is smaller than 2400cc but uses a 50mm T/B arrangement, but its non conventional and revs past 8,500 RPM... My 3 liter has now been destroked to a 2771 and will be running a 52mm T/B set up. Its all in the combo... Mac, did you reply to my email? I need to know how much $$ to send and where to send it. I need the unit next week! |
|
|
|
| Mueller |
Mar 18 2006, 02:14 PM
Post
#13
|
||
|
914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
|
ITBs and OEM-ECU do not belong in the same sentence..... for single throttle body and aftermarket fuel injection, I think most people would be fine to use the stock T/B and as many as the stock components as possible. For multiple throttle bodies (ITB's), then it's engine/application specific. What is the best price anyone has seen for a complete (air filters down to manifold and linkage) for a set of Individual Throttle Bodies such as the Jenevys or TWM's? Are there any asian import ITB's?? (besides motorcycle) |
||
|
|
|
||
| bug man nrg |
Mar 19 2006, 07:25 AM
Post
#14
|
|
Member Group: Members Posts: 66 Joined: 17-September 05 From: florida Member No.: 4,811 |
I beg to differ on that itb and oem do not belong in the same sentence i have had a lot of cars come in and they use the oem ecu with itb's ie ford focus honda civic mazda 323 toyota's bmw 2/3/5/have had this and all have picked up power and drive better (IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif)
why not a type4 am i missing some thing here? (IMG:http://www.914world.com/bbs2/html/emoticons/unsure.gif) some one fill me in on this as i would like to know more about a type type4 engine so i do not give bad info down the road (IMG:http://www.914world.com/bbs2/html/emoticons/beer.gif) |
|
|
|
| Twystd1 |
Mar 20 2006, 02:24 AM
Post
#15
|
||
|
You don't want to know... really..... Group: Members Posts: 2,514 Joined: 12-September 04 From: Newport Beach, California Member No.: 2,743 |
So Mac..
Mueller has a great question for ya
Ya wanna throw an answer out for this? Let's assume a pair of 40 ITBs for the sake of comparison... |
||
|
|
|
||
| bug man nrg |
Mar 20 2006, 05:38 AM
Post
#16
|
|
Member Group: Members Posts: 66 Joined: 17-September 05 From: florida Member No.: 4,811 |
i will have a price befor the end of the day .this price will be for 914 club only
2 itb's 2 filters 2manifolds limkage chech this space at the end of the day (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/clap56.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/boldblue.gif) |
|
|
|
| bug man nrg |
Mar 20 2006, 09:34 PM
Post
#17
|
||
|
Member Group: Members Posts: 66 Joined: 17-September 05 From: florida Member No.: 4,811 |
Sorry i came back so late with the price $795 shipped to your door |
||
|
|
|
||
| Mueller |
Mar 20 2006, 11:46 PM
Post
#18
|
||
|
914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
|
Well, I "thought" you where asking about our 914s, you cannot run the stock ECU with ITB's.....the l-jet and d-jet are very limited to what modifications can be done to the motor and the induction system.... I'm sure those other cars are all MAP (Manifold Absolute Pressure)...similar to the emerald system |
||
|
|
|
||
| Twystd1 |
Mar 21 2006, 03:46 AM
Post
#19
|
|
You don't want to know... really..... Group: Members Posts: 2,514 Joined: 12-September 04 From: Newport Beach, California Member No.: 2,743 |
OK,
Now we have a Pair of manifolds, A pair of ITBs, A Pair of air cleaners and a linkage setup for about 800 bucks shipped. That makes sense.... Now I need a emerald ECU or whatever brand of aftermarket ECU or a inexpensive MS3 setup with harness and wiring, plus 4 fuel injectors and appropriate sensors. Borrow a LM1. Add some spririted driving, have lap top will travel. Or go over to Superior Automotive or AEM and dyno tune till I am happy. I am now thinking that it is possible to do High Performance EFI for a Type4 for under 1500.00 bucks. IF I USE MS.... (Mega Squirt) This assumes I build the ignition wheel and fab up a bunch of small parts. And thats fun stuff to do.... And cost very little in materials. And I don't include a $ rate for my time. If I use a big name ECU..... I have to add 1500 - 2300 to the original 800 bucks. So 1500.00 on the cheap side with a lot of small fab work done by me. Or a full tilt bolt on system for about 2700 - 3000.00 + Hey Mike Mueller.... Does that seem relatively accurate to you based on what you have read, or built or both? And Mac, How much for an ECU with all the appropriate goodys including wheel and a basic map that will get the engine going? Minus 4 injectors? Clayton |
|
|
|
| tdsmoonchild |
Mar 21 2006, 04:07 AM
Post
#20
|
||
|
Terry Group: Members Posts: 197 Joined: 18-January 06 From: Duncanville,TX Member No.: 5,431 |
Maybe a dumb question, but what is this? |
||
|
|
|
||
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 3rd May 2024 - 04:25 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.