Subaru specialty shop
Hey what's up everybody it's Mike V with Bombarro Bus and today is the day the double A 500 series heads have come in. These are the ones we're going to use to build my brother's 1700. If this video helps you feel free to If not In either way let's get to it. These double A's I'm gonna be honest and t When you pick them up they don't feel as heavy or as sturdy as the original VW ones. But everybody knows what great material they were using back then versus what we have today. Other than that so far there's really not And that's a pretty decent price. So if we start on t First t He's got the 40 millimeter valves with the 35 and a half exhausts. So of course that brings the little gap between them closer than what you see on the stock valves. But if you look over here these don't have a crack between them and he puts a pretty good use on them. So only time will tell if these are prone to cracking between the valves. Another advantage to these are what they say is the three-quarter plug reach. See in there how deep that is versus how shallow that one that is gonna lend itself to easier cracking between there and the valve whereas they also say they've modernized the combustion chamber here and you can see the differences. Let's look at the originals. You have a lot of rough b Okay. And then when you look at these everyt No rough b You can tell that everyt So that's their modernized shape to the combustion chamber. The other t Alright and what else did you have done to them? A fly cut to 49cc. If you saw on the first video when he went ahead and got So when he ordered these heads he gave that n They're all ready to go with the desired compression ratio w 25 Yeah close. Right at 8. 25 to 1. So the other advantage w So if you see there's a full fin and it has a second full fin right there. Look over here there's only one full fin. So what they did in sin was t You don't get that with these heads so you gotta make sure that you pull your old ones off and get them there. Some people argue as to the big deal that these may or may not be and some people have even argued as to how many degrees they t Let'see what else is on t And also it was for the bore it was 20 and for the fly cut it was 80. Okay $20 for the bore and the fly cut was $80. So that's an extra hundred dollars that you tack on when you order these heads to get your desired compression ratio but it sure does be having the head paying to s Like I said this is the first pair we'll be using and time will tell Okay one of the t
