cleaning/washing engine bay
 

Is it OK with rotary to spray the motor with simple green and then hose it down?

Simple Green will cause ozidation on various polished metal surfaces..like an intercooler, or a fancy schmancy Cusco strut tower bar.

I've used it w/ great success on areas that were not bare metal (like a painted metal area such as the strut mounting areas), but thought I would warn you about areas that are polished.

There industrial brand will take of clearcoat.

use a degreaser designed for cars such as Meguiars

i use gunk foamy (engine brite)....i buy it at autozone

spray it on a cold engine...let sit a few mins.
hose it off , and start the car..
then i spray the engine with foamy tire wet
and close the hood...
i wash the car as the engine is running...and turn it off when i start to dry the car
pop the hood , wipe everything down with a rag ...
and wipe down polished parts with glass cleaner, then metal polish..
the end

brad

yes I heard of that as well~~~ Simple green has a tendency to slowly take out alluminum surfaces... however I did it on mine like 100 times and its still fine~~~ cross my fingers. :)
I would still go with recomended detergents for the engine bay due to the fact that our cars are very old now... old hoses... ect.

I dont need to cover up anything in the engine bay. Just degreaser and water. I never done it to my FD.

Just nervious if water get into something and im screw

Just user a citrus degreaser and you will be fine.

I've always been hesitant to spray water in my engine bay. I'm afraid of what could happen. Maybe it's just me.

Its you, just cover the alternator and intake and your fine. I wash the engine bay about once a month:)

Some good info here:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/i-want-clean-engine-manifold-any-ideas-84187/

FWIW, I've used Gunk's Engine Brite on several cars with good success (including the FD).

thanks for the feedbacks! i've washed my engine bay on the STi lots of times and just want to make sure on the FD.

steam clean that shit... no soap required