 motor parts on racecar, what can I get rid of |
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| machina |
 Dec 3 2003, 12:48 PM
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#1
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Advanced Member  Group: Benefactors Posts: 2,030 Joined: 21-June 03 From: Miami Beach, FL Member No.: 848   |
Have seen many 914's at the track with the engine sheet metal removed. Makes it easier to work on the engine but things get messy in there real quick. Got me thinking about what else I can take off of the motor to lighten things up.
alternator - my races are less than 30 minutes, can I get rid of the alternator to save weight and drag on the motor? Have seen it done on other cars. (not 914's though)and yes, these guys charge the battery between sessions. sheet metal around motor - as stated above cooling flaps and thermostat control - does race motor need this? big air cleaners on carbs - some guys just run screens on the stacks anything else I haven't thought of? thanks, dave |
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Replies(1 - 10)
| Brad Roberts |
Dec 3 2003, 12:52 PM
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#2
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
You pretty much nailed how I run a carbed engine.
Several of the guy's I race with have built a full pan that only exposes the velocity stacks of the carbs... then the engine lid gets a sandwhich'd layer of gauze (same thing K+N uses). Basically you have the worlds largest air cleaner (yes they somewhat seal the engine lid down). Get the electrical down to one tailight and your tach/ignition/fuel pump B |
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| VegasRacer |
Dec 3 2003, 12:57 PM
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#3
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ELVIRA Group: Benefactors Posts: 8,509 Joined: 27-March 03 From: Between Scylla and Charybdis Member No.: 481 Region Association: None
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As with any change to your race car - check the rule book.
I ran into a PCA Tech Inspector who was very picky about the engine tin. |
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| Brad Roberts |
Dec 3 2003, 12:57 PM
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#4
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
Here are a few shots of what works well (please dont forget to run a ceramic coated header.. this is the ONLY way we can get away with this... the header sends 90% of the heat out the tailpipe compared to the stock heat exchangers.
This is how we would run a production 2.0 race car. B |
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| ArtechnikA |
Dec 3 2003, 12:58 PM
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#5
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
QUOTE(Brad Roberts @ Dec 3 2003, 10:52 AM) Get the electrical down to one tailight and your tach/ignition/fuel pump i agree that's the functional minimum. however - every time i attend a 'big' event i constantly see CLUELESS spectators in the paddock who are totally oblivious to cars trying to navigate to and from parking, gas pumps, pre-grid ... i swear - if ever i prepare a dedicated track car, in addition to the bare minimum stuff you've listed, i WILL still run a HORN. |
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| Brad Roberts |
Dec 3 2003, 12:59 PM
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#6
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
And another out of the car.
B |
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| Jake Raby |
Dec 3 2003, 01:02 PM
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#7
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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 |
Ditch the alternator, just use a good reserve battery. The engine sheetmetal can get pretty hairy if you remove the wrong stuff. YOU MUST KEEP THE FLAPS FOR THE THERMOSTAT IN PLACE! If not there is nothing to direct the airflow correctly! I have seen many engines toasted because of this!
You can remove the Thermostat and cable, and ensure the flaps are fully opened. Disconnect the flap on the 3-4 bank and close it completely over the oil cooler! Then use two sheetmetal scres to keep it full down and boost the airflow to the cooler cavity! Many people do not understand how the system works. If that flap does not close all the way,. or if it is gone, the only air that hits the cooler comes from pressure at higher RPM! |
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| Brad Roberts |
Dec 3 2003, 01:02 PM
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#8
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
Ha ha.. Rich.. you are SOOOO right !!
The cars that dont run an alternator dont drive to pit lane.. we use a 4 wheeler to pull them to grid (and make damn sure you take a jump pack with you) b |
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| Brad Roberts |
Dec 3 2003, 01:04 PM
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#9
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
We close off the oil stock oil cooler area (because we dont run the stock oil cooler)... then we use a cut off flap (from the rod) inside the 1/2 bank to direct the air. I have not done back to back testing.. but we havent lost a engine this way. Am I crazy ?
B |
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| machina |
Dec 3 2003, 01:47 PM
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#10
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Advanced Member Group: Benefactors Posts: 2,030 Joined: 21-June 03 From: Miami Beach, FL Member No.: 848 |
hey brad,
that motor is a thing of beauty, I would hang it on the wall in the off season. dr |
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| Brad Roberts |
Dec 3 2003, 02:04 PM
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#11
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
I try and do it "right" every time.. some people like to have nice stuff...some people dont. I try and weed out those who dont and those that do.
B |
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