 Throttle Body Bored Out, Any Feedback Requested |
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| FB914 |
 Mar 1 2005, 09:30 PM
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#1
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74 alaska blue 2.0  Group: Members Posts: 63 Joined: 1-March 05 From: Philly Member No.: 3,689  |
I have a 74 with a recently rebuilt 2.0 with Euro Pistons, Stock D-Jet, MSD, sport exhaust and hi flow air filter, I'm wondering if getting the throttle body bored out is worth it. Any thoughts? Is there a downside - risk of screwing up the motor? Thanks
Frank |
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| Mark Henry |
Mar 1 2005, 09:37 PM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
stock D-jet??
Save your money..not worth it. |
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| Porsche Rescue |
Mar 1 2005, 09:41 PM
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#3
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Saving and Enjoying Old Porsches Group: Members Posts: 2,978 Joined: 31-December 02 From: Bend, Oregon Member No.: 64 Region Association: None |
I'm signing on only because I have a 2.0 D-jet track car with Euro p&c's and lightened flywheel. PO told me it had an enlarged throttle body (no idea how to confirm that). I want to hear what you all have to say.
I will say that it feels stronger than a stock 2.0 with Webers. |
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| Mark Henry |
Mar 1 2005, 09:51 PM
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#4
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Stock is 45mm, bored out is most likely 50mm
I have a 2.0 with a scat C-25 carb cam and SDS EFI....a bored out TB wouldn't help it.... a header would. |
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| Bleyseng |
Mar 1 2005, 10:17 PM
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#5
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Aircooled Baby! Group: Members Posts: 13,034 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
A bored out TB with careful tuning will gain about 1hp. Probably the 1hp is from the careful tuning. This test was done on a dyno.
Save your money and spend it on dyno tuning your djet. Geoff |
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| SirAndy |
Mar 1 2005, 11:32 PM
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#6
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Resident German Group: Admin Posts: 41,607 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) the weak side on our cars is the horrible exhaust flow, not the intake ... save your money for a set of nice headers ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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| DNHunt |
Mar 2 2005, 09:34 AM
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#7
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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 |
I ran one on my 2.0 L with megasquirt for about a year. Even with being able to tune the FI I couldn't see any difference. Look at the exhaust.
Dave |
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| SteveSr |
Mar 2 2005, 09:48 AM
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#8
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Member Group: Members Posts: 203 Joined: 7-October 03 From: Knox,In. Member No.: 1,223 |
(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) if you are not doing the WHOLE motor,bigger cam, bored cylinders IMPROVED intake runners and exhaust there is no sense trying to get more air in thru a bigger throttle body. (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif) ....just my $.02......
SteveSr |
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| Bleyseng |
Mar 2 2005, 10:17 AM
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#9
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Aircooled Baby! Group: Members Posts: 13,034 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Whats a Sport Exhaust?
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| TravisNeff |
Mar 2 2005, 10:33 AM
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#10
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region 
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Bleyseng, it's all in the stickers, all in the stickers...
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| Mark Henry |
Mar 2 2005, 10:42 AM
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#11
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Yep...I'll have stickers for you Canadian guys soon...good for 10hp (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) |
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| FB914 |
Mar 3 2005, 06:35 AM
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#12
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74 alaska blue 2.0 Group: Members Posts: 63 Joined: 1-March 05 From: Philly Member No.: 3,689 |
Thanks for all the feedback, I think you've answered my question. Sport exhaust is a Monza and it doesn't add any sport except an extra tailpipe. Thanks again
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| Bleyseng |
Mar 3 2005, 08:30 AM
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#13
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Aircooled Baby! Group: Members Posts: 13,034 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
switch to a Bursch and gain 3hp over the Monza.
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| BahnBrenner914 |
Mar 3 2005, 11:42 AM
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#14
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The girl is gone and all I have now is a beat-up teener Group: Members Posts: 301 Joined: 22-May 04 From: Gig Harbor and University Place, WA :: School in Angola, IN :: girlfriend in Sarasota, FL Member No.: 2,094 Region Association: None |
yeah i was talking to a guy who built racing 914s and such and asked him how to get more power out of my 914. I said, "should i go with borred out TB or headers or..." and he laughed and said "you just need to drop in a V8 if you want power" just realize you wont get too much power from your type IV, put your money into suspension and brakes to make it haul around corners.
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