Hi,
Can anyone give me some comments about type V durability and efficiency over type IV? Shouldn't it be weaker at heads and P/Cs since it uses type I's parts? I heard type I's dual port head is tend to crack because of the design flaw. And won't relocating the cylinder mounting studs compromise the structure integrities? Also what's the estimate mileage for a mild type V for daily driver (2.l liter, under 150hp)?
Thank,
Michael
Type V durability and efficiency?
-
- Posts: 448
- Joined: Wed Aug 21, 2002 12:01 am
The Aircooled needs new valveguides significantly sooner than the watercooled counterpart, simply because of the heat difference in the heads.
But of course it has a lot to do with your driving pattern. If you floor it every time you leave the stoplight, you will need inspection sooner in any case.
The WBX heads actually flow quite good, and it is relatively easy to get 150 hp out of a 2,1. You dont even have to rev it that high. I´ve seen 1,9´s that did 150 hp @ 6K. 2,1´s can do 140 hp with the stock F.I. (improoved that is) but still.
I have just ordered a special full merged header for my own 78 hp 1,9. I wanted to see how much I can squeeze out of it with the stock carb. and then after that I will install Scat 1,25 rockers and do a pull again. I think I can find another 7-10 hp in it plus some midrange torque.
We´ll see about that.
T.
But of course it has a lot to do with your driving pattern. If you floor it every time you leave the stoplight, you will need inspection sooner in any case.
The WBX heads actually flow quite good, and it is relatively easy to get 150 hp out of a 2,1. You dont even have to rev it that high. I´ve seen 1,9´s that did 150 hp @ 6K. 2,1´s can do 140 hp with the stock F.I. (improoved that is) but still.
I have just ordered a special full merged header for my own 78 hp 1,9. I wanted to see how much I can squeeze out of it with the stock carb. and then after that I will install Scat 1,25 rockers and do a pull again. I think I can find another 7-10 hp in it plus some midrange torque.
We´ll see about that.
T.