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My 1999 C4 coupe engine rebuild is starting

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Old 08-10-2022, 09:44 PM
  #61  
996C438
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Thought I would update . So I have 215 miles on the car with no issues . Front bumper is installed and she's running cool . Next Wednesday we will strap her to the chassis dyno and see what she can do . So far the only check engine light is for the SAI . I eliminated it and that will be turned off electronically next week . Looking forward to see what she can do .
Old 08-12-2022, 04:32 PM
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Plans have changed , going on the dyno Monday . Might be hard to sleep well Sunday night 😁
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Old 08-15-2022, 05:02 PM
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Just did the first baseline dyno pulls, did two pulls and have 304.92 HP and 282.30 tq at the wheels . Running rich up top so there is more in her . Will start tuning tomorrow morning when air is cooler . Will finish her up tomorrow and report final results .
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Old 08-17-2022, 02:51 PM
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Final numbers are in , made 318 HP and 290 lb ft of torque at the wheels . Pulls very strong and sounds good . Sprung a leak on a brake hardline ☹️ so repairing that at the moment . Overall I am very happy , Jake says 388 HP at the crank which is very respectable . Hope my small journey has been helpful . Probably going to be away from the forum for a while , going to go enjoy this bad boy 😋
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Old 08-17-2022, 03:53 PM
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Originally Posted by 996C438
Final numbers are in , made 318 HP and 290 lb ft of torque at the wheels . Pulls very strong and sounds good . Sprung a leak on a brake hardline ☹️ so repairing that at the moment . Overall I am very happy , Jake says 388 HP at the crank which is very respectable . Hope my small journey has been helpful . Probably going to be away from the forum for a while , going to go enjoy this bad boy 😋
Impressive numbers. Can you post the curves? I am curious on what the graphs look like.

With 14% improvement in flow at the heads you must have gone with Lens stage 2 package?
Old 08-18-2022, 06:45 PM
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This morning did one final tweek to get rid of a bobble from 2000-2200 rpm . Now she's smooth as silk from idle to 7300 . You can feel the Vario Cam kick in and she presses you back into the seat . She is a blast to drive . Now I will start the visual restoration she needs a good clay bar session along with some minor paint touch up . A Singer style mini ducktail is coming tomorrow via the brown truck . Next will be some sort of front spoiler lip . Fun times . Here are some pics of the " black beotch " .






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Old 08-18-2022, 08:04 PM
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Awesome!!
Old 08-19-2022, 12:20 AM
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Looks good! Polish the headlights and it will look 100% better!
Old 08-19-2022, 07:59 AM
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Originally Posted by dporto
Looks good! Polish the headlights and it will look 100% better!
Polishing the headlights is on the to do list. The pics make them look better than they really are . They are quite faded . But Porsche used very high quality lexan and they will look like new when done . But the interior lenses are burned on both so will probably convert to bi-xenon. Thanks for the feedback .
Old 07-02-2023, 03:13 PM
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Update: car has been running great with no issues . On Thursday I met Jake at the shop he sold me a used LN 2 quart extended sump with X51 baffles . I am cleaning it up then will drill and tap for an oil temp sensor . I am getting close to the next oil change so will do it all together . Happy 4th of July
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