Here is a link the the GKN catalog. http://www.rowland2.com/pdfs/cvdisc.pdf
I believe 930's are size 15 CV's and 934 are size 21. They have both plunging and fixed in this catalog. -Dave |
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930 is then type 15 with 108mm 934 would be type 21 and is 128mm (!) The weight difference: T2 : 1,4 kg 930: 1,8 kg 934: 3 kg (!!) If I can keep the T2 CV's in one piece (and assuming we use type 174 in that catalog), that alone saves me almost 0,5 kg unsprung weight per wheel and almost 2kg total weight for the 4 of them. Not to mention what you would drag along with 934 CV's... These things add up fast. |
I missed the details Wally. How are you running 930 and T2 on the same axle? The splines are different. I inquired years ago to Sway A Way if they would build me a set like that and they said no way.
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The axles and CV's are still exactly the same as I ran them on the 915 :) |
Engine finally in after I was able to lend a 930/G50 shaft to align the dual plates..
FYI, type 1, 915 and 930/G50 splines next to each other...Guess which is strongest ;) http://i174.photobucket.com/albums/w...1.jpg~original http://i174.photobucket.com/albums/w...2.jpg~original |
Hi Wally,
You know what, I wish I had gone for the G50 box way back when the chassis was being done. We will wait and see. It is a hell of a lot of work to get everything out if I break something. I have got some real tasty pictures from John Maher of my engine but can't get them to upload onto the site. Any ideas? |
I hear you mate..
Curieus to your engine! Just mail the pics to me and I'll upload then for you. I'll send you a PM with my email. Greets, Walter PS I just installed the last bits of my rebuild engine. Hope to start it tomorrow evening and have it running this weekend. I'll try to take some pics tomorrow as well. |
Wally, your G50 is the smallest of the G50´s correct? As far as outside dimensions.Which one is it exactly? Hope you get back on the road this weekend!
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Mine is a G50/01 ('88). The G50/00 ('87) also have the short nose cone. After that ('90 ->), the longer nose cones came into production. As you may remember, I also had the bellhousing shortenend. Every little bit helps ;) http://i174.photobucket.com/albums/w...3.jpg~original |
Thanks for the info! Looking good! A new bov also? Can't wait for the next track video!
I'll see you in Spa! |
Getting close. Can't wait to see the next video.
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looks great - whens the next dyno day?
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Been fighting sensor gremlins all day and finally after switching out the VR sensor, it started normally and even restarted hot..pfft.
I had to remodify a LOT of stuff I had changed because of the 1200T install. Things I even had forgot I changed... Anyways, hopefully I can do some tuning tomorrow. Plan is still to try to do a Nurburgring trackday which is comning friday (!). Even if it runs ok-ish on time (whatever that may be), I hope I can still get on the list for the trackday. Fingers crossed. I did need to add about 8% in the fuel map without load, so I am just as curieus as you guys if she makes more hp at the same boost now with the new cam. There is a new dynoday end of september, but I think I will be on it a little sooner if everything stays in one piece. |
Wally everything will work out fine.
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Having full compression again because of straigth rods probably helped too :lmao: The bigger cam with n/a LC of 108 degrees combined with the smaller turbo seems to work out very well so far. Hope it carries the distance in the rpm range later too. Clutch is more heavy (stage 2-ish feel, I had stage 1), but very doable and the lighter rotating assembly makes for a rev happy, real sporty engine, despite the low static CR and being turbo :) Love it so far! |
Sounds great Wally! You might not make more power,but maybe a better torque curve and more useable power? That would be much better on the track anyways.So looks like you will raising the bar once again...that´s great!
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Just did another test drive at 1 bar boost and I am not too sure if I am not making more power. I usually get this scared (heart pounding in your throat when you keep your foot in it and car takes off) from 1.3 bar boost onwards...
I also had to add a LOT of fuel in the upper rpm ranges now as well, so not sure where this turbo runs out of breath, but at lower boost, I have a distinct feeling it now makes a lot more hp. Also made a new rear apron-engine sealing plate: http://i174.photobucket.com/albums/w...3.jpg~original http://i174.photobucket.com/albums/w...2.jpg~original Soooo looking forward driving at the Ring again! |
Well if it doesn't scare the crap out of you it's not fast enough! Don't forget the HD video camera when you go the ring!
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One quick question: where did you get the degree decal for your pulley? From MSS? I have the same pulley and would like to have the timing marks/ degrees on it also.
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Good eye!
I think I had one still lying around from Ahnendorp. Its 145mm and probably a US item (buckpack or similar) originally? |
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Painted the front hood by myself with a rattle can and put a 25+ years decall on it on both sides :)
We must at least look good at the Ring if speed will be disappointing :lmao: http://i174.photobucket.com/albums/w...1.jpg~original |
Ooooh a vintage sticker! I´ll bet there´s probably some cal-look geek that would pay a nice price for that :D
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Wally the monster looks great and you will have the time of your life. Just a question really. Is it possible for your intercooler to be tucked inside the engine space. I saw this http://www.turboboxer.de/ and I was really impressed because you cannot really tell just by looking at the car if it has a natural aspirated engine or a turbo monster in there.:cool:
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Sure, but it will be less effective.
Functionality over form/looks and all that ;) BTW the ring was great! Perfect weather and the 3.5 km straight was 'interesting' especially since its not flat at all. Combined with a good cross/head wind I had to limit speed to 200-205 km/h on the straight. I now even more understand why car companies test their new models there. I now think I need/want more suspension work done 4sure. Engine and car held up great again :-) Can't find pictures from the day itself yet though. Hopefully later this week? |
The intercooler from turboboxer is a good contruction, but just as Wally pointed out it's not placed very well.Due to its construction though there's no other option really.It's missing a duct system where fresh air can pass through.The current set up in that position is subjected to heatsoak.There are electric fans also,however I don't believe they are very effective, because again, no or little fresh air is present in the engine bay.
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I understand I just like the normal hood. You cannot tell if its a turbo or not. I thought that the vents on the bodywork are enough for the intercooler. My bad!!
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If you like the stock looking appearence above everything else, that surely is the way to go. He runs waterinjection as well, so... I just _think_ outboard works a little better still. I have no hard data to prove either, so take it for what its worth. Armin's car and mine usually are the only two type 4 turbo cars that run on the track at full pace, so whatever your preference, just build it as there are still very few beetles running an aircooled turbo'd boxer of either type on the circuits at all...:( |
True Wally, however he doesn't have the performance you have,spool up is later (I presume,I've only ridden is his car.I rode in yours with the 1200 installed and comparing the dyno graphs).His set up works, but I am willing to bet not as well as yours.A comparison of intake temps would be interesting.
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Thanks Wally, I´m not missing too much.A good trans+clutch,header (looks to be a modified python),tires and a lot of small items.We´ll see how much money I can sneak past the wife ;) Next summer is my goal - I hope I can make it!
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That would be great a 3rd type 4 turbo in Europe's circuits!!!!
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First pic available from last NS Trackday. Hope I can get it in a little better quality and a few more from her.
http://i174.photobucket.com/albums/w...2.jpg~original |
Wally,
How's the car now with the smaller wheels and sticky tyres? Rich |
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It feels nimbler with the smaller wheels, but that might have been the now more responsive engine as well. Did the synchronisation today as I still hadn't even done that since it was running for the first time last week (just by ear). It does rev great now! http://www.youtube.com/watch?v=1GnIKChYmZM |
http://i174.photobucket.com/albums/w...o.jpg~original
Some testing at 23-24 psi showed the limit of the straight acn's pushrods for me now: http://i174.photobucket.com/albums/w...1.jpg~original |
http://www.youtube.com/watch?v=1GnIKChYmZM
F...ck, I am at the office and I cannot pump up the volume on youtube:angry::angry: |
Well, tbh, the sound was much better IRL then on the vid afterwards... so your not missing that much ;)
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Still I want to hear the monster
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http://www.youtube.com/watch?v=pukslh2TMs4 Had some great 1/8 mi practice runs yesterday at a car event, but with official timing by the Dutch Hot Rod Association (DHRA), a subsidary of the NHRA ;) Best was a 7.57 but with only a 60ft of 1.92 and I had to lift as the car went almost into the gates at 3/4 of the run... The "burn-out" where they put me on the dry spot with one wheel (that didn;t help keeping the car straight..) :angry: http://www.youtube.com/watch?v=dZfNjq893hs and two other runs: http://www.youtube.com/watch?v=dzpRd9BMuqU http://www.youtube.com/watch?v=TpInP5iOHBI I think I was fastest car of the weekend and the only bug :lmao: |
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