[QUOTE="losh1971, post: 3074945,
Boost = supercharger?
Was told = ok ls1 verious v6 but same principles = spend money on forged bottom end and increase boost = better than spending heaps on heads , although it would ultimately I think depend on the heads efficiently along with a hole lot more variables including the cam
Boost yeah SC, probably doubtful if I will ever go boost unless I fit a small SC14. The cost is too great for anything decent. I'm not looking for cam at this stage as the front end and sump has already been off once. The Mace rockers are doing a pretty good job. I guess could get a cam with more duration as I'd have to go shorter rods if I went with a larger cam, which defeats the purpose of 1.9 rockers.
I'm thinking heads are the next "logical" thing, even though nothing is logical even a V8 for a DD, in the end it's all wasted money lol.
With NA I can go some extra comp, and a freshen up of the heads will help ensure they are working as well as they can. Plus the benefit of reshaping the valves and seats and some mild porting. This would be something I'd do even if I did eventually go boost. Valve springs are probably a tad soft anyway for my hi ratio rockers.
The thing I do like so far with the mods I have done is economy wise it has improved by around 3lph, and yet I probably have an extra 30kw more than what I started with when I bought the ute a few years back. I'm thinking head upgrades will increase the KW but won't sacrifice economy.
Talking to the dyno tuner and he reckons I am maxed out on the intake side. He said if I go anymore HP I may need to address the restrictions I am seeing at WOT just before it peaks. Thing is I was of the understanding that my current set up even a standard V6 TB wouldn't be a restriction and I am running a 304 TB, which takes me by surprise as I am not sure what to change in order to increase the air that comes in.