Hello Alfa fans.
I'm about 70% of the way through re-building an early 80's Nova kit car which has just had its 1.7 boxer engine reconditioned, stripped, bored and everything else to make like new with a bit of extra oomph, from Rusper Alfa. The engine is fitted to the car and starts up and runs well (as would be expected), albeit without an exhaust (next job) and the car is not ready for the road yet.
I have posted one or two things on this forum in the past so you may recall my car. I'm also friends with Spacenut (Lauren).
I now need to choose my air filter set up.
Having read a lot online (forums, product pages such as Demon Tweeks etc) I am still none the wiser as to what to do about it. I am hoping that someone can help on this forum. What I need is a confident and definitive answer as to what would be the best application.
The engine has two twin Dellorto carburetors.
When the car was on the road between 1995 and 2001 I ran the engine with two domed Pipercross air filters which came with a kit comprising of two black sponge filters with integral metal cages on the inside, plus some rubber spacers and a metal base plate. These seemed fine at the time although due to the car's bodywork design, the sponge filters were susceptible to water ingress from rain and driving on wet roads. Although an engine lid is fitted it was possible for the filters, or one at least (the outboard one) to get wet when the car was outside, stationary whilst it was raining. I was naturally concerned about the engine filling up with water.
Recently some people have mentioned that the engine could do with ram pipes. I've read a lot about these but have drawn no conclusions and can't quite understand how they fit in relation to the air filters. Would they make a difference to make them worth having?
Rusper have recommended that I use the same Pipercross arrangement that I had originally and turned their noses up at the ram pipes idea. Although I respect their suggestions I also like to draw conclusions on more than one opinion. If I conformed to this then I would simply order new Pipercross air filter kits as my old ones are knackered and I know which ones I would have - C304D from this link:
PX300 Single Carburettor | Pipercross Air Filters
I've seen on some boxer engine's a K&N filter arrangement which consists of a more sturdy filter 'paper' (not quite sure what it's made of) with chrome plates on the top. This seems like a better product where not letting water in is concerned.
The height available is 160mm from carb top to engine lid.
With all these details considered I now need to know the following:
1. Ram pipes or not? If so which ones? (product name, website address, size etc and how they fit in relation to the air filter)
2. Air filter - which brand and which type (product name, website address, size etc)
I'm happy to shop around but for now I just need to narrow it down to the exact products that would be best.
I'm happy to give any other details that may be necessary.
Thanks very much for anyone responding to this. Much appreciated.