Alfaholics 198bhp TwinSpark

[Max Banks]

Quote:

Originally Posted by GTV-GR Max you used the 46/38 mm valve setup right?

[gtv27]

198 makes perfect sense to me.

We built a 4 plug engine and got about 180 at 6.5K and while it was a bit fluffy below 3K, that was probably tuning as much as anything and it was otherwise great on road and track (not that I'd want to drive it in traffic regularly!).

With the better ports, valves and pistons of the TS engine, the extra power seems quite reasonable. I'd be surprised if 220 wasn't out of the question for a big lift high revving engine.

[hagen111]

Quote:

Originally Posted by gtv27 198 makes perfect sense to me. We built a 4 plug engine and got about 180 at 6.5K and while it was a bit fluffy below 3K, that was probably tuning as much as anything and it was otherwise great on road and track (not that I'd want to drive it in traffic regularly!). With the better ports, valves and pistons of the TS engine, the extra power seems quite reasonable. I'd be surprised if 220 wasn't out of the question for a big lift high revving engine.

[GTV-GR]

Max...plz DO SHARE

[DarkMark]

Hello I have a 1985 alfa veloce spider/graduate with the twin spark twin carb mod already on but i need more info about it is trhere any site or whatever that i could get much more info



Thankyou very much
DarkMark

[hotcams]

Darkmark,

Alfaholics: Twin Spark Engine Parts

Does anyone have torque numbers/graphs to share of these monster build TS motors??

[nda9h]

Hi,

check formula GT - Sportwagenservice München, i remember having found some diagrams for those engines on the site. Formula GT and Alfaholics have a kind of partnership.

[hotcams]

Thanks for the cool link, what a great site!
I dont understand german but I think I found a torque graph for a TS Formula GT Referenzen

and another TS hp graph it looks like Formula GT Referenzen

They mention building a TS engine anywhere from 185 to 245hp! Yes, please!
formula GT - TUNINGTEILE

[tussegaaas]

I have a twinspark related question. I'm building a GTam replica, and I'd like to have it FIA homologated. I have plans to get a 155 TS head on it, is it possible to get it homologated with this head?

[60sRacer]

You might also look at what Murray (MSIERT) has done with his 2 L Nord engine - dual VVT, mapped injection, lots of other goodies; 200+ HP at modest rpm. A well mapped injection is night and day from the old GTA race engines with Webers that needed 8000+ rpm to get to top end, and were barely drivable under 4000 rpm.

Robert

[tussegaaas]

I know, I tune and rebuild engines for a living. But driveability isn't mainly what I'm looking for, it's a FIA homologation that I need, and I don't think a motec or something like that will get me this homologation.

[Zagato_Olaf]

Quote:

Originally Posted by tussegaaas I know, I tune and rebuild engines for a living. But driveability isn't mainly what I'm looking for, it's a FIA homologation that I need, and I don't think a motec or something like that will get me this homologation.

[tussegaaas]

Olaf thanks for the tip, I'll check this out. reason why I asked is because I've read group 2 homologation for '71 (I think), and these regulations say that everything of cylinderhead is free as long as you keep the original amount of valves, and this can be done also, if you get it homologated. (like the 16v heads they used)

[han]

Fia will not homelogat you any part, the car will only get homologated if it complies with the org homologatation papers.

16V was never homologated for the Gtam so you will not be allowed to run it in Fia group 2 races, nor will it allow any use of modern technology like injection computers.


Han

[DarkMark]

Please if anybody has pics of the alpha 2.0 litre ts motor please send them my way by replying or to markjb215@aol.com