 904 rebuild |
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| 904svo |
 Oct 5 2006, 12:56 PM
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#1
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904SVO  Group: Members Posts: 1,118 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146  |
Had to rebuiled the top end of my 2.0 ltr engine, had bad rings. Installed new
pistons and cylinders and did a valve job. Just tuned my engine on my sons Dyno. Instaled 32MM choke tubes and change the main to 135 on my IDF40's Engine now dellevers 93.35HP at 108.65 lbs. of torque with a high lift cam. Engine started out with 76HP at 99 lbs. of torque what a difference now. (IMG:style_emoticons/default/piratenanner.gif) (IMG:style_emoticons/default/driving.gif) |
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| Twystd1 |
Oct 5 2006, 03:38 PM
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#2
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You don't want to know... really..... Group: Members Posts: 2,514 Joined: 12-September 04 From: Newport Beach, California Member No.: 2,743 |
Post your dyno sheet...
I love looking at dyno sheets. What induction? What size cylinders? What timing worked best? What elevation> ETC? Thanks Twystd1 |
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| 904svo |
Oct 5 2006, 05:12 PM
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#3
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904SVO Group: Members Posts: 1,118 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146 |
 Dyno run before rebuild |
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| 904svo |
Oct 5 2006, 05:13 PM
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#4
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904SVO Group: Members Posts: 1,118 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146 |
 Dyno run after rebuild Using Weber dual idf 40's |
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| 904svo |
Oct 5 2006, 05:15 PM
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#5
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904SVO Group: Members Posts: 1,118 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146 |
 Dyno run after changing jets and choke tubes Engine is a stock 2.0 ltr 94X71 with a high lift cam installed by PO. |
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| Bleyseng |
Oct 5 2006, 07:18 PM
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#6
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
well your AFR was pretty lean before!!
Now you are in the 12's mostly. |
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| Matt Romanowski |
Oct 5 2006, 07:46 PM
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#7
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Senior Member Group: Members Posts: 878 Joined: 4-January 04 From: Manchester, NH Member No.: 1,507 |
Looks good. What are you running for CR and cam?
Have you thought about the CB Performance Weber Update kit. It removes the secondary venturi and replaces it with a spray bar. I put it in my old 2 liter and it made a difference by the seat of the pants. It would be interesting to see dyno results on it. |
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| 904svo |
Oct 6 2006, 09:48 AM
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#8
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904SVO Group: Members Posts: 1,118 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146 |
QUOTE(Matt Romanowski @ Oct 5 2006, 05:46 PM)  Looks good. What are you running for CR and cam? Have you thought about the CB Performance Weber Update kit. It removes the secondary venturi and replaces it with a spray bar. I put it in my old 2 liter and it made a difference by the seat of the pants. It would be interesting to see dyno results on it. CR is 8.25 I'm at a 1000ft elevation. Cam is unknown as it was installed by the PO. I am in the process of installing headers on the car should be good for 5- 10 HP will post Dyno runs when finish |
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| Jake Raby |
Oct 6 2006, 10:25 AM
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#9
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Work on that exhaust :-)
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| 904svo |
Oct 6 2006, 12:53 PM
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#10
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904SVO Group: Members Posts: 1,118 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146 |
QUOTE(Jake Raby @ Oct 6 2006, 08:25 AM) Work on that exhaust :-) Jake, Now that the car is street legal I plan to work on that exhaust while the body is taken off for painting. |
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| GTeener |
Oct 6 2006, 01:49 PM
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#11
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914 Girl Group: Members Posts: 2,348 Joined: 25-June 04 From: SillyCon Valley Member No.: 2,249 Region Association: Northern California |
(IMG:style_emoticons/default/hijacked.gif)
Trivia Alert.... I went to Robert Redford lecture recently and he told the following story: Robert Redford owned a 904 when he was filming Butch Cassidy & The Sundance Kid. He let Paul Newman drive it on a little road trip they went on and it is because of this drive that Paul Newman got hooked on driving and racing Porsches. ..... back to the regularly scheduled program.... |
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| Al Meredith |
Oct 6 2006, 05:54 PM
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#12
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Senior Member Group: Members Posts: 960 Joined: 4-November 04 From: Atlanta, ga Member No.: 3,061 |
I would like to hear some club members' responce to the CB carb spray rails. I think I remember Jake saying they don't add anything.
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| Jake Raby |
Oct 7 2006, 02:13 PM
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#13
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
All they did for me was complicate tuning...I tried them numerous times and never got their worth from them. A better ignition system is a much better purchase.
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