evening lads, I was at a Bike show today and saw a fully built engine on a stand.
It was a 2.8l v8 with twin turbos and throtle bodies, and it wasnt much bigger than a lawnmower! from what I could tell it was two hayabusa top ends mated to a custom block giving a really compact revvy v8, which was capable of (they say) 1000bhp.
With it being on a stand I could have a good look at the whole turbo thing up close for the first time really. The next logical thought was obviously, could I do that to my boxer? I was surprised at how little pipework the set up had. I would be intrested to know if there was some dark art that I'm not aware of when it comes to executing this kind of thing?
Any whos this engine was the kind of thing you look at and think "well, I'll have to build somthing really nice to put it in now!" beauty encarnate I didnt get a pic but I'll try and find a link, some crowd from newry I think
Kev's right, these are not cheap. There have been a few single turbo's done and superchargers but I have not heard of a twin although I'm sure someone has done it. A lot of cash for not much gain and as Kev said the box will have to be beefed up so more money, cheaper to do the Scooby route unless it has to be alfa.
cheaper to do the Scooby route unless it has to be alfa.
ok lads, not as simple as I thought thanks for the input though. I might just see if I can balance my carbs first
seriously though, What could alfa have done with the boxer if they had stuck at it development wise, I mean they already had a 4x4 set up in the p4 and that block is ripe for tuning surely? They killed it of in the mid nineties and subaru are still selling them today. DOH springs to mind
seriously though, What could alfa have done with the boxer if they had stuck at it development wise
How about the 1977 Alfa T33/TT12?
Flat-12, quad-cam, 48 valve, twin-turbo. Not for road use, obviously
The other limiting factor with twin turbos (which are easier to configure on horizontally-opposed or vee engines) is the time it takes them to spool up when driven by a small cylinder capacity. With a twin-turbo boxer you have only two cylinders driving each turbo. The latest generation of small-car turbos with variable pitch rotors may be the way to go these days.
Alfa dropped the boxer engine because they were told to by Fiat. The flat-4 is dynamically well balanced, and the short crankshaft means they can rev and rev, but there's more money spent on the inline 4 so the poor old boxer was left to languish. What could have been eh?
Basically , they went to inline 4 to be compatible with other Fiat and Lancia models. That why we had 145-146 155, Tempra ,Delta and probably other models with interchangeable parts .... For example , Kevin installed a 5 cylnder tyrbo engine from a Coupe to his 145 without modifing at all his engine bay. Some of my friends install Recaro Seats from Delta to their 155 because they are better looking ( and ...Recaro of course.)
It was. Also used on the legendary BT49 "fan car". The very comprehensive Alfasud history on Tim's Alfasud site mentions that Carlo Chiti acted as consultant during the Alfasud development, and I like to think that some of that Autodelta thinking went into our little boxer engines