B
BlueNeon
Guest
A quick look round, produced... Nothing! is there nothing that can be done to squeeze a few more gee gees from this engine?
any thoughts would be great thank you
T
any thoughts would be great thank you
T
DoomPixie said:which manifold do you mean? exhaust manifold is easy, i have one sat in my shed that has been modified to take a T3. Just cut the cast manifold, make up a box around the end and weld a turbo flange to the end of the box, wel the box to the manifold. done. just need to preheat the manifold and use an arc welder because its cast. the hard bit with turboing a K10 is geting the fuel and ignition advance curve sorted out, the rest is childs play. i know for a fact if i ever atempt it again i will be converting to a full efi / ignition management system so much easier to make changes too than massing around with the jets in a carb.
Owen
DoomPixie said:you might be better off geting some work done to the head before bothering changeing inlet manifold and carbs.
Bigger valves modified for low flow resistance and a little big of tidying up on the casting is pretty much all it needs though.
or atleast thats all i did to the cylinder head on my mates and acordign to the dyno we were pushing 72bhp ( i think it was 72, might have been more) and that was with standard carb and inlet manifold. might be worth giveing paul ivey a call and seeing how much it would cost to have him make you up a set of valves for it.
i used valves from what looked like a VW cylinder head but they needed modding to fit and also needed modding to improve their flow characteristics. even just modifying hte valves that are in there and giveign the head 3 angle valve seats would be a good start ;-) anyone with a valve seat cuttign tool can do the seats and the valves you can get modified at a local engineering place that has a lathe, they are pretty easy job aswell.
Owen
DoomPixie said:the valves may be large to start with, but as with any standard valves they arent built for high flow.
Inlet manifold isnt easy to make, modifying the valves is fairly easy and does show increases in power from my experience. Problem is im just guessing that the increase was down to the head work,
It could just as easily have been down to the exhaust manifold (modified 4-2-1 rover metro manifold) or a combination of everythign even.
When i did the head for my mate i spoke to paul ivey about getting some performance valves made for it but the cost was goign to be too high and he suggested the modifications i did to the valves, all i did that he hadnt suggested was swap the valves for slightly larger ones, and that wasnt the main reason i did that either, the exhaust valves i put in were in better condition and were stainless steel.
Your right, if you have a high power mig welder then that is better than an arc welder for doing the exhaust manifold but you will still need to preheat it because the original manifold is cast and the turbo flanges you can buy are made from steel (or atleast the ones i found were).
I know a standard T3 is too big, but the BB T3 i had worked very well. spun up at about 3 - 3.5Krpm.
DoomPixie said:looks promising though i must say. depends on what size carbs you can get, if they are stupidly oversize then you can actually start looseing power because of it. or so ive been told, personally im not sure.
Owen