Porsche 964 - 200kg challenge
#121
#122
#123
One issue to consider, as I just talked to Colin Belton at 9m a of it last night, is that the reason he hasnt produced an aluminum intake stack is that the plastic is needed to insulate the injectors etc from the heat of the heads.
more diameter change throughout the runners rather than the relatively sudden transition happening just in the stack where you really want to keep the velocity high.
pete
more diameter change throughout the runners rather than the relatively sudden transition happening just in the stack where you really want to keep the velocity high.
pete
If you think about it though the intake runners have a lot of cool air running on the inside providing cooling and there are many intakes out there made out of metal. I would not be concerned about this and think the reason Porsche did them out of plastic is a few dollars for an injection mold compared to any metal options that all need machining.
the transition is today at about 1,5 degrees and I was working with the guideline to be below 3 to keep the flow laminar. One possibility would be to make em taller, and Ill try this first ;-)
#124
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Garydose (06-08-2020)
#125
#126
Here we go, another one is out! Sorry for being late with the replies... I wasnt getting any notifications from Rennlist for some reason...
It took a bit more time for this one as I had to spend a few weekends on the track driving...
Bling bling fuel tank - Tailor made 964 fuel cell
It took a bit more time for this one as I had to spend a few weekends on the track driving...
Bling bling fuel tank - Tailor made 964 fuel cell
The following 6 users liked this post by Jonte:
fridtjov_RS (06-11-2020),
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luv2race (08-02-2020),
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Jonte (06-08-2020)
#128
Next part is out and was a blast putting together. This is one of my long aspirations to build a DBW intake!
https://youtu.be/f5MiS8iLN1I
https://youtu.be/f5MiS8iLN1I
Interesting video.
I am doing essentially the same thing but my engine is twin turbocharged. GT3 plenum and throttle body DBW etc. A couple of things I noticed. There is more than enough room at the backside for the TB to stick out and fit a filter I cut two aluminum elbows and welded them, I can't use plastic since the pressures would be too great but I can fit the TB and have the pipe from the intercooler fit with ample room. I noticed is you based your intakes off the 964 units. Did you consider using the 993 RS designed units instead? They are a larger dia and raise the injector 4mm higher than the 964 units. This adds for better atomization of the fuel and better spray pattern onto the valves for cooling. It would have been a $20 per unit expense and is made from the same plastic which will handle the temps and not transfer the heat. My car weighs 2650 pounds with 1/2 tank of fuel. I'm not as concerned about weight since I will have more than enough power and contact patch to help me get around the track.
I like the CF intake very similar to the one Bob made for the America GS. What you really need is his fuel cell. Full CF with bladder and F1 technology fuel scavenge pickup points. This was specifically designed for the 964 America GS and if only we could get him to sell them.
#129
That is something else! Just dreaming- it would be great to have a single unit designed for the frunk and housed a fuel cell as well as an integrated oil tank. Would be nice to get that weight shifted up front.
Pete
Pete
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911Jetta (06-11-2020)
#130
I guess not possible from a regs point of view, but the fuel tank is always a separate cell - would it not be feasible to integrate this actually into the front tub, ie, for it to be part of the structure itself rather than something that is bolted into it? I assume that as long as it's filled with the safety gel (or whatever it is) it would still be safe? You could probably move it further forward and lower maybe?
EDIT: Just noticed that this is my 3,600th post. Quite fitting today. RIP Hans.
EDIT: Just noticed that this is my 3,600th post. Quite fitting today. RIP Hans.
Last edited by Andy Roe; 06-11-2020 at 03:54 PM.
#131
https://rennlist.com/forums/964-foru...te-design.html
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#133
Rennlist Member
Joined: Jun 2011
Posts: 1,291
Likes: 251
From: Toronto, Canada, Outside Turn 2 Mosport
Fitting bodywork panels is not easy nor cheap. It is very hard to appreciate how difficult and how many man hours are required to ensure custom panels fit well. Having just had the exterior of my car "adjusted", I can really sympathize with the volume of work you must be doing. Excellent build though and I continue to be amazed at your skill.
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Jonte (07-05-2020)
#134
Fitting bodywork panels is not easy nor cheap. It is very hard to appreciate how difficult and how many man hours are required to ensure custom panels fit well. Having just had the exterior of my car "adjusted", I can really sympathize with the volume of work you must be doing.
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John McM (07-05-2020)
#135
Hi - I am in love with you project!!! As I've said earlier... Keep the goods things coming please
I maybe have an idea for you - there is this german guy doing lightweight stuff for our 964's. Please have a look in his shop - Frank is a very nice guy and his parts are outstanding in quality fitment etc.
I have most if his stuff mounted and it is always a pleasure.
He has developed a pair of "mountings" (I don't know the word in english) for the aluminum beams in the front an the back - this will give you another 3,5 KG...
https://www.netzwerk-911-shop.de/sho...r-964-und-993/
Best regards, and I hope to see your car once its finished,
Greetz from Lübeck, Tim
I maybe have an idea for you - there is this german guy doing lightweight stuff for our 964's. Please have a look in his shop - Frank is a very nice guy and his parts are outstanding in quality fitment etc.
I have most if his stuff mounted and it is always a pleasure.
He has developed a pair of "mountings" (I don't know the word in english) for the aluminum beams in the front an the back - this will give you another 3,5 KG...
https://www.netzwerk-911-shop.de/sho...r-964-und-993/
Best regards, and I hope to see your car once its finished,
Greetz from Lübeck, Tim