turbohead wrote:Faulks enthusiasm breaks the walls!!!! Can't wait almost for mine!!!
huge respect Martin

.
Thanks Chris, and yes it will be great getting yours sorted, as hopefully that will take things on to the next generation on the 12V.
I have been looking to see results to compare the result on JonV's 350hp 2.5ltr, dyno plots and have a look-see if there was any interesting information to share. Interestingly, that would have been equivalent to DG's (for ART) Stage 6!!! LOL - why the other 5 stages(?)... I think it's a stage 2..
http://www.renaultalpineownersclub.com/ ... 2&start=15There are various reads and results, but nothing that I could directly compare. Jon's is OE 2.5ltr bottom end, the rings are a bit tired, the liner heights were a bit like the New York skyline, and the heads a tad warped, so all in all I actually thought the result was a bit of a miracle given it's certainly not a blue-print build by any stretch of the imagination!
So how does it compare, well in single turbo 2.5ltr I couldn't find a results anywhere near it, which is a pity I think, as there simply can't be enough people out there willing to give it a go...
So for your amusement, various discussion threads:
Much talk never got close:
http://www.renaultalpineownersclub.com/ ... &start=105http://www.aussiefrogs.com/forum/archiv ... 26523.htmlGRAHAM WALLIS17th August 2005, 10:48 AM
Hi Ariston,
a few people in the club have turboed the V6.
One bloke has a twin turbo 2.8 ltr PRV V6 putting out 180 kilowatts at the wheels. Oddfire has a 2.8 ltr PRV V6 and is converting it from a single turbo to a twin turbo. Brendan Calder has a 2.664 ltr PRV V6 single turbo on gas putting out 150 kilowatts at the wheels. Before Brendan turboed the V6 he has a supercharged V6 in a 505 which was also impressive.
All these cars are 505s.
Andrew
Just to clarify things (and to use US terminology) these cars all run on propane.
Graham
Here for reference:
http://www.aussiefrogs.com/forum/attach ... 1091846125http://www.aussiefrogs.com/forum/attach ... 1091846393Reference:
http://www.aussiefrogs.com/forum/showthread.php?t=15361http://www.aussiefrogs.com/forum/archiv ... 15645.html... puts it at 240hp... bit weak really
That makes Will's look impressive on a single turbo and all OE including the Renix 1 ecu, no charge cooler, mods were limited to a pair of MF stage I cams and a matching turbo, and that punched out 275hp and probably more as the 240cc injectors were limiting... here.. and I would call that a true stage 1, (DGs Stage 4)..
http://www.renaultalpineownersclub.com/ ... highlight=Stephen Dell:
Quote:
Stephen...you say that 280bhp is widely accepted as the ceiling on turbos
One of the main factory tuners (Danielson) could not break the 280bhp ceiling on the A610 even by adding twin turbos. They had set what they believed to be an unambitious target of 300bhp which surprisingly they could not achieve and that is the reason why there was no A610 Danielson or Danielson II.
The most powerful GTA with original manifolds in this country is probably the ex Prima car with 500+ NM torque. We have now seen the power plots and there is a freefall in the power curve again at 280 bhp.
Quote:
You say that 330bhp is possible on the atmo....what you mean is the factory team achieved this....when you say mega bucks you may well mean it!!!!!
Probably but still mostly basic mods that could be carried out by most 'old school' tuners. Bigger valves, porting, raised compression and crappy Lucas mechanical injection.
Quote:
If I had limitless money to spend on the turbo engine I'm sure that an engine builder could come up with the necessary manifolds, race cams, football sized turbo and other add ons to achieve well over 330bhp......
Yes that is probably true. The Danielson guys admit that with revised turbos and manifolds they could have achieved the 300bhp target. However they decided that the necessary development and parts costs would be uneconomical. I suppose the proof of the pudding will be Tony Smiths output from his 3.0 turbo and whether he can break the 280 'limit' retaining the existing manifolds.
I think that most people would agree that the best way to obtain big power on a PRV is to dump the existing manifolds and fit twin turbos, preferably starting with the 24V engine. The engine management is also a big deciding factor. This would have been a very costly barrier in the late 80's and early 90's and is now easily and relatively cheaply achievable
Reference:
http://www.renaultalpineownersclub.com/ ... 2ff00cc949More bumping gums below, good on hot air, but nothing making black lines when it wheel spins in a straight line!
http://www.renaultalpineownersclub.com/ ... sc&start=0Blast from the past:
David Gentleman9th December 2004, 08:55 AM
Im doing something similar, but in an Alpine GTA. Its only 1080Kgs, and ive taken out the old 2.5 evenfire 8.6:1 turbo block, and replaced it with the 2.8 even fire 9.5:1 Renault block, but still using the turbo setup and ancillaries. The bigger engine has larger valves and far better cam profiles than the turbo (turbo 8-40-40-8) (2.8L 14-57-50-19) so more overlap, but im only going to be running around 6-8 pounds on a .63/AR EX / 57trim T4 turbo.
Im going to be trying to improve on the standard management, or switch to something like the Wolf 3d system.
Manifold wise, may do a bit of a change around, and move the turbo down low in front of the crank pulley using off the shelf equal length manifolds for a normally aspirated Alpine and link the two together to a common turbo flange. This will bring the turbo as low as the bottom of the engine, reducing heat, massively shortening the exhaust system (remember the engine is at the back) and increase flow through the larger bore manifolds, as exhaust gas speed wont really be a problem due to the high compression ratio.
BTW, I have a pair of V6 turbo manifolds, link pipes and turbo flange spare for sale £100 for the lot. I can arrange international shipping if any body is interested. The design brings the turbo up over the top rear of the engine.
http://i5.ebayimg.com/01/i/02/f1/cc/79_1_b.JPG
... so come on John Law get it done!
Reference Aussie Frogs 2004:
http://www.aussiefrogs.com/forum/archiv ... 15361.htmlSo the best rival I can see is Alan Moore's 610 3ltr, and haven't been able to find the result, so post it up, what did you get?
Alpine GTA V6 Turbo
The Renault Alpine A610 also had the 93mm sleeves. I bought a set of these recently from Renault in Australia. They were sitting in a warehouse in Melbourne. I don't know what they were doing here. I expect they were wrongly ordered for a Laguna, but they are the correct part No. for the A610.
I bought a Volvo B280E motor (760GLE) from the wreckers, that had a small burn on top that really only damaged the wiring mostly for $500 I think. Internally it was in excellent condition, and must have had minimal Klms.
I am in the process of building a reasonable engine for the GTA, but it won't be cheap. Chances are I could buy quite a good 205 Mi16 for the same money, and that is with me doing most of it myself. The heads are away now. I did the portwork myself. Using the Renault heads with Volvo valves and cams. 2975cc 8.6 to 1 13 Lb boost, hopefully without detonation.
It is currently 2450cc 8.6 to 1 11 Lb boost although the boost drops off above 5000 Rpm as the turbo is too small. The Volvo has 10mm longer stroke and it will have 2mm oversize bores to 93mm (A610). The Volvo cams have approx 1.5 mm more lift at the lobe, and I will be using these.
Loom $250
Motec M48 $2000
B280E Motor $500
R25 Turbo Motor $950
Ball Bearing Turbo $1800
Headwork, Big Seats,Springs $700
Balancing $230
A610 Pistons& sleeves $1800
Exhaust+Coating $500
Uprated clutch $500
Water pump $160
Gaskets&Seals $230
Tuning $400
Plat Plugs $100
Injectors S/H $300
Bearings & conrod sizing $250
$10 670
And I am sure there are things I have forgotten, or that will come out more expensive. And in the end it will just look like a standard motor, barring perhaps the turbo, but even then only if you have one to directly compare it against. Hopefully the difference will show up on the road. Last edited by alan moore; 21st October 2005 at 05:29 PM. '56 Renault 750 (16TS Power)
'89 Renault Alpine GTA V6 Turbo
Growing old is inevitable
Acting your age is optional
Reference:
http://www.aussiefrogs.com/forum/showth ... 361&page=3
So there you go

onwards and upwards, stage 2+ and stage 3
