Does anybody know how big b16a1's exhaust ports are?

...if not, what should i do?

Well here's the problem. I bought a SRS header to my CRX vtec (EE8) and the item disctription didin't say is the gasket included, so I bought a SRS header gasket just to be on the safe side. And now that I got the parts I noticed that there was a gasket in the package. When I looked at those gaskets I realised that the two gaskets weren't identical.

The another one (one with the header) is sliglty smaller than the header ports and the second (whitch i bought seperately) is all around little bigger than the header ports.

So should I use the smaller or the bigger one? Or should I grind the header to match the diameters of the bigger gasket?

Best thing would be propably to make them just little bigger than the actual exhaust ports, but I don't know their size. And I need the car so I can't just take a look.

 

Put which ever gasket doesn't interfere with the ports...like the bigger one..you don't want a part of the gasket to get in the way of air flow. After time, the part of the gasket that is in the way will probably fall apart for flowing air and carbon.

 

Use the bigger gasket and port match your header, gasket, and head to the same size if you want to optimize flow (port matching is very common and required to make any real power). leave the smaller gasket alone as it will just impede flow.

 

use the gasket that is a little larger than the ports

 

just use a stock honda gasket. It should match the head perfect.

 

Well yeah, i thought about buying a stock gasket, but those cost here $50 so I'll use the bigger SRS gasket and grind the header ports just little smaller than the gasket, because when i tighten the header bolts, gasket will probably expand a little.

But hey, thanks for all of your help.

 

just wondering if you have any info on swapping a b16a1 into a 91 civic hb dx

 

denraweb. Have you done the b16 swap. You have to hook up v-tec with the 5 wires and wire in multi port injection is that ll you need to do ?
can u email me so we can talk further since im a noob and cant message you . tmaxx_kretchy@hotmail.com

 

-denraweb. Have you done the b16 swap. You have to hook up v-tec with the 5 wires and wire in multi port injection is that ll you need to do ?
can u email me so we can talk further since im a noob and cant message you . tmaxx_kretchy@hotmail.com