Originally posted by v-teg01
So i have to say thanks for the feed back, keep it coming!
I have a couple more questions about the NA feed back.
1. Am i going to gain a couple horsies by raising th cr, just with a different head gasket.
2. Say i changed the cr would i have to change it when i go to emissions?
3. Could someone explain the 2.0 part cause i really want a 2.0 GSR where would i start?
4. Also would it be pointless to get apr-rod bolts now, and if i got them how do they help the car perform?
:thinking:
All the info u give helps, thanks!
1. Maybe a little bit. But you'll have to take the head off to install it and it's not really worth the trouble unless you happen to be taking the head off anyway.
2. You're not going to pass emissions without a cat. Put one on, and you will most likely pass.
3. To get more displacement you have to either replace the crank and rods with ones that will give you a longer stroke (this is not advisable for several reasons but for now just take for granted that it's bad) or you have to widen the bore of the cylinders and run wider pistons. You cannot simply bore out the stock cylinder sleeves, you need to replace them with new ones first which can handle larger bores.
4. Again, this is a lot of work to take apart the motor just to install some bolts. This is the type of thing that you do with the motor out anyway.
Since it sounds like you plan on going with a larger displacement motor at some point down the line, the best thing to do for now is to work on the top end. Without removing the head, you can replace the cams. For a B18C1 I recommend the skunk2 Stage 2 grind. To go with the cams you will need at the very least upgraded valve springs and retainers. To tune them in you will need adjustable cam gears. You already have the V-AFC (which as have already told you in a previous thread isn't doing anything for you until you tune it) so combined with cam gears that will give you all the adjustability you need for a dyno session.
Step 1: if you ever want to pass emissions get a high flow cat
Step 2: replace the cams with skunk2 Stage 2; upgrade valve springs and retainers; install cam gears to help with tuning
Step 3: take car to dyno to dial in V-AFC and cam gears