Peter M Posted 7October, 2019 Author Report Share Posted 7October, 2019 3 hours ago, clutch-monkey said: i have the adaptors for jenvey ITB to 964 intake under my bench somewhere.. Sam, Comments like that don't help me you know! 😊 Afforded a SC owner a drive of it yesterday after the monthly C'n C. He came back with a grin. Quote Link to comment Share on other sites More sharing options...
LeeM Posted 7October, 2019 Report Share Posted 7October, 2019 1 hour ago, Peter M said: Afforded a SC owner a drive of it yesterday after the monthly C'n C. He came back with a grin. People who have never driven one usually do 😁 Peter M 1 Quote Link to comment Share on other sites More sharing options...
Peter M Posted 11October, 2019 Author Report Share Posted 11October, 2019 Not a 3.2 but a favourite video that is well worth multiple views: Raven 1 Quote Link to comment Share on other sites More sharing options...
Arnage Posted 12October, 2019 Report Share Posted 12October, 2019 Excellent Quote Link to comment Share on other sites More sharing options...
TwoHeadsTas Posted 12October, 2019 Report Share Posted 12October, 2019 c'est magnifique (and that's about the extent of my knowledge of French 🙂 ) Quote Link to comment Share on other sites More sharing options...
LeeM Posted 12October, 2019 Report Share Posted 12October, 2019 I've had the model of this car for a few years solely because I liked the look of it. Great to see the history of it and watch the video again, yet the best part is to watch the original driver in his 70's driving like he stole it! Arnage, TwoHeadsTas and Peter M 3 Quote Link to comment Share on other sites More sharing options...
Peter M Posted 12October, 2019 Author Report Share Posted 12October, 2019 That video reminded me that Grant's Grp 4 build was also an inspiration at the time. Based on a UK 3.2, the engine modifications are surprisingly modest I think compared to the rest of the car. I think that was deliberate to showcase what can be done with the standard engine without incurring to much cost as most 3.2 owners appear to be tight arses to the extreme when it comes to modifications: 3.4L piston and barrel set to run 10.3:1 compression ratio Remapped Motronic ECU set up to run on 98 RON fuel Custom cams Extrude honed manifold with larger throttle body Lightweight valve spring and retainers Complete rebuild right down to the crank with blueprinted assembly https://autohaushamilton.com.au/news/the-autohaus-hamilton-911sc-group-4 I've been interested to know what cam's he used but that's never been published from what I can see. Actually he's been pretty coy about the engine full stop! This video somewhat explains the commercial imperative behind the coyness: Quote Link to comment Share on other sites More sharing options...
Peter M Posted 18October, 2019 Author Report Share Posted 18October, 2019 Run of out room in your Guarantee and Maintenance booklet to show servicing records? You're not alone and for me the prospect of paying a $125USD for another booklet wasn't that appealing. Many places like Autohaus just staple a couple of new pages that they make up themselves into your book so they can continue to record services but the form they use reminds me of my old primary school reports. So with a bit of playing around in Excel, a sheet of A4 beige coloured paper that after printing can be cut in half to give the right size, gives me another 24 blank spaces. So at one service a year (< 10,000km), I'm fixed up to 2043! Being Excel allows most people to fiddle with the size and edit to their hearts content if they wish. Maintenance Record Porsche.xlsx JWM, Stepo, hugh and 8 others 11 Quote Link to comment Share on other sites More sharing options...
Peter M Posted 22October, 2019 Author Report Share Posted 22October, 2019 Who's Benny? Ben Perry from Benchmark Solutions in Gateshead, just south of Newcastle: https://www.facebook.com/BenchmarkSolutionsAU/?tn-str=k*F In the last week one car he tunes won the NSW Rally Championship and another won it's class at the World Time Attack Challenge at Eastern Creek so he knows his stuff. Andre interviewed him at last year's ATAC about the car that was successful this year: While WRX's and Evo's are his bread and butter, he has tuned about half a dozen 911's now, including a 2018 Gunnedah Week of Speed class winning turbo 911 and is interested in doing more because he likes them. Would I recommend him? Yes. Quote Link to comment Share on other sites More sharing options...
Peter M Posted 22October, 2019 Author Report Share Posted 22October, 2019 Two years ago a run up the Oxley Highway was the inspiration for the modifications described in this thread. On the weekend I had the chance to retrace the run with most of the same people and many of the same cars. No Lambo this time though but had a Mk1 GT3 as a substitute. This time I found I had enough power to keep up with the modern cars, especially if I went down to 2nd for the 35 kph advisory corners. The engine was tractable and responsive and with the air flow modification to the airbox lid, now has a glorious induction roar above 3,500rpm. It went well enough for my purposes that I'm now not in any great hurry to enlarge the throttle body. Only issue experienced was a missing throttle return spring that often resulted in a high and inconsistent idle speed. A call to James today should have another ready to fit later this week. Getting RBT'ed with the engine at 2,200 was a little too conspicuous for my tastes! The Potenzas RE003's still impress. When warm they work great and take some effort to get hot and squirmy. The rears were well behaved, always progressive and gave no surprises. Many use R spec tyres but I don't think that's a great idea on the street. I want plenty of warning of loss of traction! Plus I like driving in the rain and don't particularly like noisy tyres either. In the tighter corners particularly, the lack of tyre width, caster and camber show up clearly compared to modern cars. But for an essentially 56 year old design it's not to shabby at all and a hoot to drive. Even the air con worked OK! 😊 Rob, hugh and Harvs11 3 Quote Link to comment Share on other sites More sharing options...
Uncle Posted 24October, 2019 Report Share Posted 24October, 2019 Ben has also tuned my last 3 turbo 911's. Every single one of them has won its class in the 1,000mtr events. Peter M 1 Quote Link to comment Share on other sites More sharing options...
Peter M Posted 1November, 2019 Author Report Share Posted 1November, 2019 Just another 3.2 to 3.4 conversion but with 13 times (Yes, I calculated it!) my budget. 'tis nice though! Marlon mentions Kinsler throttle bodies that appears to be an alternative to Jenvey and AT Power https://kinsler.com/Shop/2016/04/30/kinsler-gt-porsche-itbs/#more-21840 MFX 1 Quote Link to comment Share on other sites More sharing options...
Peter M Posted 1November, 2019 Author Report Share Posted 1November, 2019 A bit of a write up on Goldberg and the engine here: https://www.enginebuildermag.com/2019/06/eotw-air-cooled-flat-six-twin-plug-3-4l-porsche-911-engine/ On this 911 engine, Goldberg used titanium connecting rods, rockers and a straight cut intermediate gear all from Pauter. The engine also has CP pistons, Mahle Motorsport cylinders, Dema Elgin cams, Kinsler injection, and a MoTec M130 ECU and a MoTec PDM30. The rest of the parts in the engine are Porsche Quote Link to comment Share on other sites More sharing options...
Peter M Posted 2November, 2019 Author Report Share Posted 2November, 2019 Installing the missing throttle return spring wasn't too arduous. Still a pain in the arse as it is located under the intake manifold but better than I expected. The AFM delete tube 3D printed by Benny. I replaced the airbox as the one on it had a couple of broken tabs and I happened to have a spare that I bought to modify but didn't need to in the end. A few discretely bored holes in the air box lid reduced the pressure drop at WOT to a similar level to no air filter at all. Quote Link to comment Share on other sites More sharing options...
OZ930 Posted 2November, 2019 Report Share Posted 2November, 2019 And a pillow with a pretty pink pillow case in case you need a nanny nap half way through. You think of everything Peter Peter M 1 Quote Link to comment Share on other sites More sharing options...
cafe_racer Posted 2November, 2019 Report Share Posted 2November, 2019 Guys in this thread seem very informed. Does anyone know of a good suspension place in Melbourne? Am planning to get some Kw v3 ‘s put into my 3.2 along with refreshed bushings. I normally get my work done at Porsche Melbourne but suggest they will baulk at doing something so far from stock. Quote Link to comment Share on other sites More sharing options...
Peter M Posted 2November, 2019 Author Report Share Posted 2November, 2019 1 hour ago, cafe_racer said: Guys in this thread seem very informed. Does anyone know of a good suspension place in Melbourne? Am planning to get some Kw v3 ‘s put into my 3.2 along with refreshed bushings. I normally get my work done at Porsche Melbourne but suggest they will baulk at doing something so far from stock. café, I can't help but reckon @hugh and @Harvs11 would give you the good oil. I'm interested in what you do to yours as I plan to do a bit of a tidy up of my suspension in the future. All I've done to date is turbo tie rods, Bilstein's and rear torsion bar bushes. I've kept the standard ride height as I don't want to be fearful of driveways, cattle grids and gravel roads. @Tips has recently done a fair bit of work to his and it would be interesting to hear the detail of this work and the results. I recall there was a good thread or two on the 3.2 KW upgrade on Pelican Forum: http://forums.pelicanparts.com/porsche-911-technical-forum/977089-kw-suspension-74-89-911-a.html http://forums.pelicanparts.com/porsche-911-technical-forum/1020341-kw-v3-adjustable-dampers-g-model.html cafe_racer and hugh 2 Quote Link to comment Share on other sites More sharing options...
Harvs11 Posted 4November, 2019 Report Share Posted 4November, 2019 On 02/11/2019 at 21:20, Peter M said: café, I can't help but reckon @hugh and @Harvs11 would give you the good oil I’ve got nothing to add here. I’m still running original springs and dampers. Quote Link to comment Share on other sites More sharing options...
cafe_racer Posted 4November, 2019 Report Share Posted 4November, 2019 On 02/11/2019 at 21:20, Peter M said: café, I can't help but reckon @hugh and @Harvs11 would give you the good oil. I'm interested in what you do to yours as I plan to do a bit of a tidy up of my suspension in the future. All I've done to date is turbo tie rods, Bilstein's and rear torsion bar bushes. I've kept the standard ride height as I don't want to be fearful of driveways, cattle grids and gravel roads. @Tips has recently done a fair bit of work to his and it would be interesting to hear the detail of this work and the results. I recall there was a good thread or two on the 3.2 KW upgrade on Pelican Forum: http://forums.pelicanparts.com/porsche-911-technical-forum/977089-kw-suspension-74-89-911-a.html http://forums.pelicanparts.com/porsche-911-technical-forum/1020341-kw-v3-adjustable-dampers-g-model.html Thanks for the links mate, some great reading in here. It seems the setup and install are just as important as the products, would be great to find a porsche suspension guru in melbourne who can help get the best out of it. Quote Link to comment Share on other sites More sharing options...
Peter M Posted 15November, 2019 Author Report Share Posted 15November, 2019 Brake Upgrades? Everything you need to know plus more: http://forums.pelicanparts.com/porsche-911-technical-forum/159802-ultimate-brake-upgrade-page.html I think 3.2's are pretty good standard if everything is in good condition. My old white gold 3.2 had great brakes with wonderful feel. They had been extensively (and expensively!) rebuilt just before I bought it because one caliper seizing due to lack of use. The red car isn't as good so I have some work to do. There is some interesting stuff on this website like what size Ribe socket you need to disassemble the front calipers on a 3.2. Yes, a R6 is correct from the man in the back row. https://www.pmbperformance.com/video.html Wow, probably the best caliper rebuild "how to" I've ever seen: https://www.pmbperformance.com/brakehowto.html Strut Braces? Probably not as effective as you think for a torsion bar car on street tyres. Interesting read here with some quantitively testing rather than the usual forum hearsay: http://forums.pelicanparts.com/porsche-911-technical-forum/1018553-strut-bar-benefit-testing-before-after.html Quote Link to comment Share on other sites More sharing options...
Peter M Posted 15November, 2019 Author Report Share Posted 15November, 2019 Horsepower Wars or Just Wishful Thinking? I've been following this thread with interest over the last few weeks with some amazing dyno numbers coming from various 3.2SS and 3.4 builds: http://forums.pelicanparts.com/911-engine-rebuilding-forum/1043400-3-4-dyno-chart.html With differences between corrected and uncorrected hp figures of 40 and 50hp, a mix of engine and chassis dynos using undisclosed correction factors for drivetrain losses, it all becomes a bit unconvincing in the end. Not saying a wild cam and 6 ITB's isn't the way to big power but with no reference to reality its impossible to compare engines. I've noticed that these high US horsepower claims often discourage local engine builders from posting their dyno runs even though Mainline dynos, albeit with their very conservative readings, are very common and give very consistent information. I think that's a pity as it would be very useful to see the effect of modifications on each other's engine builds, particularly the shape and area under the torque curve . Andre gives his take on dyno numbers: This thread got to a point where even the other Yanks were saying bullshit! A couple interesting points make it worth a read: http://forums.pelicanparts.com/911-engine-rebuilding-forum/1046284-promised-3-8-dyno-graph-here-2.html Cheshire Cat 1 Quote Link to comment Share on other sites More sharing options...
wilson59 Posted 15November, 2019 Report Share Posted 15November, 2019 On 11/10/2019 at 22:15, Peter M said: Not a 3.2 but a favourite video that is well worth multiple views: That was terrific to watch the car sounded amazing . I rode that section of the rally with some mates this is us at the start . Thanks for posting it brought back some memories Peter M 1 Quote Link to comment Share on other sites More sharing options...
Peter M Posted 17November, 2019 Author Report Share Posted 17November, 2019 Didn't know that much about FI and tuning before all this started, except for rebuilding a CIS in a Volvo in the late eighties... this is actually the only reason I've never considered buying a SC! Sal Carceller recommended these Greg Banish books which I've found useful to understand the basics: Quote Link to comment Share on other sites More sharing options...
Peter M Posted 21November, 2019 Author Report Share Posted 21November, 2019 Combustion Chambers I think I've already described the chambers on these cars as archaic (actually I think I used the word shithouse!) and am surprised how little development has gone into improving them over the years, particularly when you consider the megadollars that go into these 911 engine builds. We seem to be very conservative and maybe even a bit snobby to even think our beloved Mezger engine isn't that perfect after all. It amazes me that we are still generally reluctant to twin plug even though it's relatively simple and inexpensive with modern ECU's and direct fire nowadays. So I was pleasantly surprise when I came across Henry's thread with his "peanut" style cambers and the interesting photo of a 962 head on the 3rd page showing that Porsche themselves were heading down the same path: http://forums.pelicanparts.com/911-engine-rebuilding-forum/434823-old-school-twist-3.html Now I run hot and cold with Henry and some of his theories and beliefs but I've gotta admit he's pretty successful at what he does. Would never use his head studs in any of my engines though! I think it is valuable to keep an open mind and see what others are doing. I've already alluded to my admiration of modern Ducati engines like the Testastretta and the 1000DS engine in particular as an example of how a 2 valve air cooled engine should be. Looking at the combustion chamber on this engine shows old Henry is on the right path and everyone else just sheep in a flock.... Note: the "port" on the right of the head is not the intake but actually a housing for the camshaft. A toothed belt runs up through the fin cut outs EDIT: Great article here from Kevin Cameron on this topic: https://www.cycleworld.com/what-does-it-take-to-achieve-fast-efficient-combustion/ Quote Link to comment Share on other sites More sharing options...
Uncle Posted 21November, 2019 Report Share Posted 21November, 2019 I would say shit house is being nice. Quote Link to comment Share on other sites More sharing options...
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