an_juan

I'm going to the shipping terminal to pick up my 20b after work today.

It's going in my FD by the way.

I am looking for pics of the 20b's side intake ports. If you have any, please show me. Thanks.

tri_tam

you mean like on the housing?

4RotorRocket

Use the search and see what you find.

an_juan

Ok it's at my house, and it's a beauty. I've taken off most of the accessories components and about to trash them. There seems to be quite a bit of carbon deposit in the intake manifold.....what is that indicative off?



Also, the 20b is rated at 300hp; that's 100 per rotor. An FD is rated 255, which is 127.5 hp per rotor. Why the difference? I can see why some people replace the housings with ones from an FD.



The turbos are much bigger than an FD's, though I'm thinking about a single turbo. It's not part of the original plan.....but what the heck.

j9fd3s

the rotary has overlap when the inakte and exhaust ports are open at the same time. they can get a kind of natural "egr" with a restrictive exhaust. at low engine speeds/ port velocity they do that, you have to remember the cosmo is hooked to an automatic, mine was all gummy too, and its a lot cleaner being bolted to a stick and seeing more revs.



mike

an_juan

on the 20b, the idle control valve is in at the TB. I've seen pics of people using a TB from an FD. How would they control idle?



Also, where could I buy gaskets that are exclusive on a 20b?



An

tri_tam

i don't think the fd tb would fit, i think 20b tb have more air flow for that extra rotor.

my engine a carbon too.

turn out the gasket broke betten lower intake manifol and housing.

broke where the exhaust come out to the avc.

so... i filled those hold. ahhaha



hope that help

j9fd3s

the fd tb bolts right on, and i thought it had the bac in the tb too?



for 20b parts send an email to ralphh@dgdg.com he's the parts manager at the dealership i used to work for, and he can get 20b parts



mike

an_juan

The FD's idle solenoid valve is not on the TB but on the upper intake manifold. The 20b's idle solenoid valve is on its TB......but that's neither here nor there.



The exhaust ports of the 20b is smaller and more restrictive than an FD's. I think this is where the power difference comes in. I don't feel like swapping housings right now, so screw it.



Thanks Mike for the parts connection.



An

j9fd3s

hmm you know i think i only tried the fd tb gasket.



i agree with you on the exhaust port thing, i was way to impaintent to pull the motor apart, get it running!



mike