Tii manifold vs. stock on a 1600....

[pecsok]

Just ordered a set of new studs and bolts from Carl Nelson to reinstall the exhaust manifold on the 1600 head. Would installing the tii mainfold I scored recently be advisable on the 1600, since the larger ports wouldn't match the 118 head? Would the performance be noticeble over the stock manifold on the 1573cc motor? Should I just plug the 1600 manifold air ports and save the tii manifold for the 2002? I think I just answered my own question....

[SHEN]

My opinion is that you wouldn't have a noticable change since the ports are still the same size so you should save it for a 2002 motor.

[bmw_jeff]

I thought about the same thing with my former 1600, and with the exhaust manifold you should not have to worry about the port sizes not matching since the smaller ports are exiting gas into the larger ports on the Tii manifold. What really gives the 1600 problems is finding a intake manifold that has the proper port size like for adding dual 40DCOEs, its very difficult to find them. And if you use the common 2002 intake the ports don't match and have to be ground out to match up better. But this is not your issue, I digress...

My '67 has the early free-flow manifold from pre-smog pump days so I think it is similar in flow to the Tii anyway. Go ahead and use it on the 1600 until you need it for the 2002, unless its right around the corner or something then save it.

[BrianC]

Just ordered a set of new studs and bolts from Carl Nelson to reinstall the exhaust manifold on the 1600 head. Would installing the tii mainfold I scored recently be advisable on the 1600, since the larger ports wouldn't match the 118 head? Would the performance be noticeble over the stock manifold on the 1573cc motor? Should I just plug the 1600 manifold air ports and save the tii manifold for the 2002? I think I just answered my own question....

The exhaust port size is not close at all, and I would seriously recommend NOT using a 2L manifold on a 1.6 mill.

If you measure the 1.6 port size compared to the 2L manifold you will see how little sealing surface is actually there. The will be no performance increase unless you have a header that fits the 118 head to increase the flow... typically along with more fuel going in

HTH

BC

[Slavs]

Hunt down a pre-smog 67 1600 manifold. The 2002 exhaust ports are a pretty bad match for the 1600, and you might have leaks.

As for intake manifolds for sidedrafts; the 1800ti manifolds are a perfect match since the 1800ti and 1600 basically use the same head. They are not too difficult to find.

Slavs