if your going to do a cam i wouldnt go with the 1.8 it has mixed results. i have some serious deja vu right now lol.

Best gains you will see n/a and notice a difference
are gunna be 1.8 pistons.
intake
header
exhaust

colt cams might be a nice addition ( we will see how they work on my motor soon)

every thing i said can be done for a reasonable price if you do it a little at a time.

oh and btw, i did everything listed above and more with out any tuning and it ran great.

with a tune its even better.(however it wasnt tuned till i turboed it )

 

MSD had well over 250bhp NA out of the Gen1 when developing the F2 Evo, working with just stock parts, noticealby not the 1.8 pistons, which is why I'm still a bit sceptical, as the guy who's helping me with my build and dismissed the idea was paid by Hyundai to assist MSD with the F2 Evo project, so by far the Uks best expert, but he's admitted its something they never thought of, so I'm tempted to give it a go (Unknown terriotory in Uk tuning, so whats a rough bhp gain from it?). Anyways Hyundai didn't like it as most of these stock parts had to me handmade or heavily altered before fitting, the only thing different they let them keep was the 1.8 inlet cam, which was worth only around 5-7bhp, although best results were mid-range not peak. However in the UK its seen as something to do if you are changing the timing belts/chain, or have the cover off for some other reason, no point going to the effort just to swap them.

 

To find the difference with the 1.8 pistons you'll have to slap the engine (or car) on a dynamometer. I've yet to see anyone who used them and did a before/after power output test. The power boost would be whatever you'd normally get with an increase in static compression. I've read that a gross rule of thumb is about 2% per point increase, so something like ~3HP might be expected on a tuned N/A Beta. Plus probably better fuel economy. Beware the tuning, use higher octane gas, and/or use Singh grooves or you may have a detonation monster on your hands.

 

3hp? Surely there must be more? Or does is it improvements like throttle response, lower powerband etc that dynos won't show? you all dismiss the cams that give twice that hp gain.

 

Ya I'm not 100% sure if I'm going to go with the 1.8 Pistons or not. From what I hear about the cams I'm pretty hesitant to try them. Definitely going to try some Singh grooves though. I just got a Subaru for the winter, so now I'm just waiting on some body work. After that its time to dig in

 

I don't dismiss anything that's been shown to work. The cam, pistons, and grooves, have all been shown to work. And yes, in the same Beta engine at the same time.

 

I'm not dismissing it improves, I'm just thinking of the economics. It'd mean the car off the road for a few days, and a lot of my time and money given up to gain just 3hp. Cams gain twice that and can be swapped in a couple hours. Hence why I was asking if theres differences a dyno won't show, such as throttle response.

 

Some people chase every possible kW and Nm. For them, it is totally worth it.

 

What do you mean by "grooves"?



Remember English is not my native language and we use different terminologys!

 

Google search: "Singh grooves"