Hi guys, I'm new to the board here.
I would like to know what header, cat-back system, intake manifold, TB, cams, clutch and flywheel would be the best on a B20VTEC motor. I live in Denmark, Europe where the B16A1 powered CRX EE8 was in produced in '90-'91, so I will be using a B16A1 cable tranny.

The setup I'm using is:
B20B3 block bored/horned to 85 mm.
IB Spec. Wiseco 12.0:1 pistons
Probe Rods with ARP bolts
Balanced B20B crankshaft
Hondata B16A Heatshield
ARP head studs
Stock B16A1 head
Injen CAI
B&M pres. reg.
PRS4 stand alone system (www.perfectpower.com)
B16A1 cable tranny

I was thinking about using a SMSP header, Skunk2 Mega flow cat-back system, Skunk2 intake manifold, 70 mm. STR TB, Skunk2 Stage 2 cams and valvetrain, CM Stage 4 clutch and flywheel. How does this look??

 

Sounds really good, you might have some objections from other members to the 70mm throttle body but not sure. I really don't know personally what size to go with on an all motor b20vtec

 

i think a 62-64mm T/B would be ideal for that setup.........70mm would be a little to large

 

if you go with a 70mm at least get it tapered to 66-68mm in the middle

 

Thanks for the input.
What is the problem with using to big a TB?
Can I use the stock CRV clutch with a CM flywheel on a B16A1 cable tranny?
How much does the SMSP header cost and is there a good alternative for it in this setup?
Is there a better cat-system then the Skunk2 for the CRX and is 2.5" the best way to go?

 

1. Too big TB = less air velocity, think of it like this, a 64 mm tube with a certain amount of air in it, and a 70 mm tube with the same exact amount of air, being able to spread out more, the air in the 70 mm tube will move much more slowly through the larger tube then the smaller tube. Same reason you don't want a 3" full exhaust system on a stock honda motor, you need exhaust velocity (not backpressure like a number of people think).

2. Yes but get a CM clutch as well, clutch is in my top 5 things to upgrade.

3. Not sure

4. 2.5" is great, I've heard decent things about the Skunk2, thermal R&D makes some good lines too, just avoid the 3" unless you go turbo.