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Banned
Join Date: Feb 2003
Location: So California
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Quote:
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Join Date: Jun 2003
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I have verified that the injector angle and location is the same but I am awaiting my new carrera phenolic manifold spacers to verify this fact.
Once they are here I will post some pics of how the unmolested 930 port matches up the to carrera manifold and spacer, looking in from where the intake valve should be. There is a chance that the notch shown in beeps pic may have been overkill since its located in an area where the injector spray pattern is still narrow. I should have an update by the weekend if my package arrives tomorrow as it is supposed to. |
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Join Date: Jun 2003
Location: St Petersburg, FL
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Ah, I almost forgot to link to my seperate balancing thread . . .
http://forums.pelicanparts.com/911-engine-rebuilding-forum/200123-930-engine-balancing-results-post1696485.html I am also flattered to see that I now have the second most popular thread in this forum, right behind reringing alusils. ![]() Last edited by 350HP930; 01-06-2005 at 03:14 PM.. |
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Join Date: Nov 2000
Location: Sydney, NSW, Australia
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Quote:
![]() I also like the DIY nature of the rebuild rather than the "i gave them $$$ and i got my car back in a month" type of process.
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Saintly '97 318Ti Sport, DASC, H&R coil overs (sold) '07 F800ST '10 Forester X Special Edition Last edited by Saintly; 01-06-2005 at 03:32 PM.. |
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Join Date: Jun 2003
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Even if I had more money to throw at my project I would still prefer to do everything myself. Part of it is the satisfaction of being able to produce my own automotive magnum opus and the other is that it would be hard to find someone else who could put the same level of workmanship into such a project for $$$. When I started my project and this thread I was a recently laid off engineer who was more concerned with paying my bills than getting this all done but I knew in my heart that I would eventually prevail. In addition to my employment woes I also had to deal with a divorce and defaulting on some debts. I am happy that is all now behind me and I am to the point where I am nearing the end of this phase of my porsche project. Its a nice change I must admit. Even though my skills were a little rusty after not working as an automotive machinist and tech for almost a decade fate was certainly on my side when I landed a job at one of the best automotive machine shops in the southeast. Talk about a godsend for this kind of project. Depending on the size of my tax refund I might actually have enough money to wrap things up soon. Once I get all my W2s I will know more for sure. My spread sheet says I am about $4K away from completion and I currenly have about $2K in the bank. I will just cross my fingers and do my best to keep my PP bretheren updated on my trials and tribulations. |
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Banned
Join Date: Feb 2003
Location: So California
Posts: 3,787
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Its good to have people who still like to get their hands dirty.
From an ex but still quite mad rocket scientist who can't even get spell check to work on this stupid thing. Last edited by snowman; 01-06-2005 at 05:42 PM.. |
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Registered User
Join Date: Jun 2003
Location: St Petersburg, FL
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I am too lazy when it comes to spell checking what I post on the web.
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Registered
Join Date: Jun 2001
Location: Sweden
Posts: 5,715
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Quote:
Different EFI injectors have different spray-patterns depending on their design. Pintle, disc, 6-hole injectors...they all have different patterns. Easiest way to avoid trial-and-error is to install same type of injectors as OEM Carrera injectors, port the heads so they match the intake just as Carrera does and then bolt everything at same height. If not, he could check injector pattern on the bench, note the angle and try to find out how they will spray once installed in his particular application. Some of you might find this overly ambitious but I think it's worth doing while everything is in pieces anyway. There are cold-start, emission and some subtle power-benefits of optimizing this and manufacturers spend lot's of time/money on optimizing injector position. Fuel should be atomized as well as possible before drawn into cylinders. There is a risk of condensation if spray is directed so some of it is spraying intake walls.
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Thank you for your time, Last edited by beepbeep; 01-07-2005 at 05:50 AM.. |
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Still Doin Time
Join Date: Nov 2004
Location: Nokesville, Va.
Posts: 6,728
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You gotta really respect a guy who is going through a divorce, almost bankrupt, jobless and still puts his priorities in order!!
OK, ok ........got all these personal problems...but I GOTTA get my 911 freshened-up!! YOU GO SON!!! YOU MAKE ME PROUD TO BE A MAN!!!
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'07 Jeep SRT-8 - Hauls groceries and Hauls *ss '85 Guards Red Targa - F@#king Money Pit '95 Road King w/117ci - No time to ride, see above '77 Sportster Pro-Street Drag Bike w/93ci - Sold to collector '72 Yamaha CS5 200 Twin - Sold to fellow Pelicanite |
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Yeah, it always saddens me when I see tales on this board about people giving up their beloved car due to personal or financial reasons.
No matter how bad things get a man always needs a good car. |
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faster than I once was...
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This is a great thread, but...
I can't believe we have an "English teacher" commenting on anyone's spelling errors!
quote: "Its good to have people who still like to get their hands dirty. From an ex but still quite mad rocket scientist who can't even get spell check to work on this stupid thing." This is a great thread!!!
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~Dave |
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Banned
Join Date: Feb 2003
Location: So California
Posts: 3,787
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I ain't never been no english teacher and I was commenting on my own (in)ability to use spell check. can't youall read?
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Join Date: Jun 2003
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Quote:
![]() ![]() ![]() Last edited by 350HP930; 01-09-2005 at 10:01 PM.. |
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Well that's great news then. You might not need to deck the ports after all?
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Thank you for your time, |
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My plan is to epoxy the spacer to the head since the Carrera gasket will still not cover the stock 930 port.
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2014 Cayman S 2011 Cayenne Turbo 1979 930 (475 rwhp at 0.95 bar) |
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Registered User
Join Date: Jun 2003
Location: St Petersburg, FL
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That gasket is so oversized I am just planning on making my own that will better seal the spacers to the head.
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Registered User
Join Date: Dec 2001
Location: MA USA
Posts: 2,938
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I used an SC gaskets fpr under the carrera spacer.
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Dean 911 SC turbo, 3.0L 930 motor, G50, 930 brakes, DTA EFI, 352 RWHP DynoDynamic dyno, |
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Registered User
Join Date: Jun 2003
Location: St Petersburg, FL
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I finally had a chance to bore out one of my intake ports on the mill today. One down, five to go. At least I know what I will be up to during my lunch breaks all this week.
As the pics show my bore angle calculations were dead on the mark. For anyone who might attempt this on their own the hole is pointed 3.2 degrees towards the combustion chamber. The new port size is now 39.5 mm. There is still a little blending to do but the end of my headwork is near. As the marker shows the area near the injector port will be a little narrow so I will probably add some epoxy to that area for a little extra safetey margin. The most hair raising part of this operation is that the reamed out intake port comes within 0.15" of the valve spring seat. So far so good at least. ![]() ![]() ![]() Last edited by 350HP930; 01-15-2005 at 10:55 AM.. |
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Banned
Join Date: Feb 2003
Location: So California
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Good info. Are you going to flow the heads? If so please post data. Tnx.
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I bored mine to 40mm, not realizing the Carrera intake is really 41mm. I had to go back and do some hand work to match them.
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2014 Cayman S 2011 Cayenne Turbo 1979 930 (475 rwhp at 0.95 bar) |
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