Here's Why Mi16 Inlet And Exhaust Cams Are Not Interchangeable...

[Stu 18]

 

 

I found this out the hard way...

[welshpug 1,626]

but are they fine apart from the keyway?

[Stu 18]

I havent mic'd up the profile, but they certainly look similar.

 

Also, the exhaust cam doesnt have the keyway for the rotor arm base plate.

[VisaGTi16v 1]

I dont know much about cams but im sure ive read quite a few times that you can use whatever that common mi inlet catcam is as an exhaust one if you then decide to get one of their more extreme inlets?

 

Infact I have a handy saved message with those quote "If you want to upgrade at a later date then with a set of vernier pullies the 526 inlet can be moved to the exhaust and a 527 inlet bought (the 527 exhaust is the same as the 526 inlet, making upgrading easier)."

 

So is it just the standard cams that dont work swapped round or all?

[Stu 18]

Maybe the cat cam has another keyway i wonder?

[Ryan 99]

Surely the keyway being different just means you can't use the standard method for setting the timing. You have to either do it the hard way, or drill a new timing hole in the pulley?

[Baz 421]

I'm sure PeterT's website says his cams can be used for either inlet or exhaust, not sure whether any changes would have to be made or them specifically being ground/made with one or t'other in mind though...?

[tom_m 0]

Surely the keyway being different just means you can't use the standard method for setting the timing.

 

this ^

[DrSarty 90 1 Cars]

I'm sure PeterT's website says his cams can be used for either inlet or exhaust, not sure whether any changes would have to be made or them specifically being ground/made with one or t'other in mind though...?

 

I'll find out when I see him.

 

You'll just have to wait a month.