 3.0 guys - anyone running carbs, what cam? |
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| Mike D. |
 Feb 7 2007, 02:06 PM
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#1
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OK, It runs now, and pretty good too!  Group: Members Posts: 1,448 Joined: 3-January 03 From: Santa Clarita, Ca Member No.: 85 Region Association: None 
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I'm looking at possibly getting a 3.0 but it has no F.I. So I would just run it with webbers.
Does anyone out there have this set up now? Are You running the CIS cam or was it changed out to a early T,E or S? Bruce Andersons book says it's an easy 200HP with Webbers (set correctly) and headers, and the stock CIS cam. Any thoughts? TIA, Mike D. |
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| Joe Bob |
Feb 7 2007, 02:17 PM
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#2
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
The CIS cam is fine....the 964 cam is better. If I recall, most anything else requires head work.
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| Brando |
Feb 7 2007, 02:58 PM
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#3
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BUY MY SPARE KIDNEY!!! Group: Members Posts: 3,935 Joined: 29-August 04 From: Santa Ana, CA Member No.: 2,648 Region Association: Southern California |
906 cams!
Not very streetable but fun. Actually I'm with mike on the 964 cams. |
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| JWest |
Feb 7 2007, 03:15 PM
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#4
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Senior Member Group: Members Posts: 1,662 Joined: 6-January 03 From: Fort Worth, TX Member No.: 97 Region Association: None
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The problem is that valves will hit the pistons with the more aggressive cam grinds.
So change pistons and cams if you want something like S or Solex profiles, or go with 964s for the easy (but milder) setup. |
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| LvSteveH |
Feb 7 2007, 06:06 PM
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#5
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I put the Poor in Porsche Group: Members Posts: 1,080 Joined: 22-April 03 From: Las Vegas, Nevada Member No.: 600 |
Keep in mind that the 964 cams will work better with the higher compression of the later 3.0L (80-83). They really aren't the ideal choice with the 78-79 lower compression motors. If you are planning to eventually upgrade the pistons anyway, it probably makes sense to do the cam at the same time. You'd want something more aggressive than the 964's when you upgrade the pistions.
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| Allan |
Feb 7 2007, 06:07 PM
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#6
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
QUOTE(James Adams @ Feb 7 2007, 01:15 PM)  The problem is that valves will hit the pistons with the more aggressive cam grinds. So change pistons and cams if you want something like S or Solex profiles Like these... (IMG:style_emoticons/default/biggrin.gif) Attached thumbnail(s) 
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| TimT |
Feb 7 2007, 07:06 PM
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#7
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
I have webcam 20/21's in my 3.2 six.. stock CR and no issues with clearance. I suspect the 3.0 is a similar animal.
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| kconway |
Feb 7 2007, 07:47 PM
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#8
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Senior Member Group: Members Posts: 1,347 Joined: 6-December 04 From: Monrovia, CA Member No.: 3,231 Region Association: Southern California |
Uhhh, Mike, whatya going to do with your 6?
Kevin QUOTE(Mike D. @ Feb 7 2007, 12:06 PM) I'm looking at possibly getting a 3.0 but it has no F.I. So I would just run it with webbers. Does anyone out there have this set up now? Are You running the CIS cam or was it changed out to a early T,E or S? Bruce Andersons book says it's an easy 200HP with Webbers (set correctly) and headers, and the stock CIS cam. Any thoughts? TIA, Mike D. |
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| bwilless |
Feb 7 2007, 09:37 PM
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#9
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Member Group: Members Posts: 156 Joined: 24-January 03 From: Tempe, AZ Member No.: 192 |
The 'E' Cams are the hot setup for a 3.0 with Webers. Ton's of Tourqe down low. I get 200 HP with as much torque to the rear wheels. The valve clearance is close, I think it still has the CIS pistons.
Here's the dyno at the wheels:  |
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| dekman |
Feb 7 2007, 10:35 PM
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#10
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Member Group: Members Posts: 458 Joined: 12-December 04 From: Ojai,CA Member No.: 3,274 Region Association: None |
I agree...my engine builder used "E" cams and cosworth pistons. Topped my 3.0L off with some 46 webers. Love it.................. (IMG:style_emoticons/default/biggrin.gif)
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| Mike D. |
Feb 7 2007, 10:44 PM
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#11
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OK, It runs now, and pretty good too! Group: Members Posts: 1,448 Joined: 3-January 03 From: Santa Clarita, Ca Member No.: 85 Region Association: None
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QUOTE(kconway @ Feb 7 2007, 05:47 PM) Uhhh, Mike, whatya going to do with your 6? Kevin Check the Classifieds soon (IMG:style_emoticons/default/smile.gif) - One of my issues with doing this is that my 2.0 six runs so good and I pretty much know everything about it. Thanks for the input. The engine I'm looking at is a '78 so the 964 cams are out. Allen, I couldn't remember what size six you had, but I thought you said you were running the CIS cams? |
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| dgw |
Feb 7 2007, 10:44 PM
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#12
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Dennis Winter Group: Members Posts: 557 Joined: 7-January 03 From: Santa Cruz Mountains Member No.: 106 Region Association: Northern California |
My six had a stock 82 3.0 with the Webber's off the original six, with lots of changes to the jets and K&N air filters.
my 83 SC has the 964 cams in it. Both engines are terrific. |
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| Allan |
Feb 7 2007, 11:49 PM
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#13
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
QUOTE(Mike D. @ Feb 7 2007, 08:44 PM) Allen, I couldn't remember what size six you had, but I thought you said you were running the CIS cams? That was before I had the motor torn down the second time to fix some oil leaks. Mechanic said he had a couple solex cams that he wanted to get rid of and I said that since the motors apart go ahead and throw them in... Wurks gud. (IMG:style_emoticons/default/burnout.gif) |
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| 914Timo |
Feb 8 2007, 07:04 AM
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#14
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******* Group: Members Posts: 743 Joined: 13-January 03 From: Finland Member No.: 137 Region Association: Europe |
I have ยด79 3.0 with Solex cams and Webers. Pistons needed valve pockets. Runs fine and strong, but fuel consumpion is baaaaaaaaaad. As soon as I have time I will chance to programmable FI.
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| Racing916 |
Feb 8 2007, 07:12 AM
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#15
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Member Group: Members Posts: 341 Joined: 16-October 04 From: Binghamton, NY Member No.: 2,959 Region Association: North East States |
I run a 2.7L w/Carbs and I also use "E" cams that replaced the "S" Cams. E Cams will give you more Tourque. The motor has around 240 HP and about 240 ft. lbs. of Tourque. Compression is 10.9 to 1. I did have to replace the pistons, and now they are correctly domed. I would say the "E" cams are the way to go. The motor with S cams before was not as much fun to drive.
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| Eric_Shea |
Feb 8 2007, 03:10 PM
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#16
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PMB Performance Group: Admin Posts: 19,289 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains  |
QUOTE The 'E' Cams are the hot setup for a 3.0 with Webers. Ton's of Tourqe down low. I get 200 HP with as much torque to the rear wheels. The valve clearance is close, I think it still has the CIS pistons. Nope. I agree E-cams and Webers but you'll need new pistons. That is a VERY nice street engine. This is where the problem begins with these motors (I have one). If you have Bruces' book, I would recommend what he recommends to start with. I think he basically states "put the Webers on there and backdate the exhaust." (which is what you would have to do with a 914 anyway). He also mentioned advancing the cams 6deg. Think about it... it's a 180hp motor as is. With the Webers and the headers you should easily be at 200 and reading 180 at the rear wheels. Tons of torque and very streetable. As the motor tires and/or you ambitions increase, start stock piling parts like cams and pistons. Making a 3.0 a ripping high performance engine is doable but, as you can see it doesn't come that cheap. Excellent block to start with IMHO. |
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| Mike D. |
Feb 9 2007, 02:18 PM
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#17
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OK, It runs now, and pretty good too! Group: Members Posts: 1,448 Joined: 3-January 03 From: Santa Clarita, Ca Member No.: 85 Region Association: None
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Thanks all...
Eric, that is the exactly what I was going for. I can get it in the car for summer and start stock piling parts for a future rebuild. I probably only put around 3k miles per year on the 914 anyway so it should get me through a couple of years. BTW, I committed to buy the engine this morning, so... 2.0 E spec six for sale (IMG:style_emoticons/default/biggrin.gif) very low miles, very fun, come drive before you buy... sorry, I'll take to the classifieds... |
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