Cleaning 302 intake

[FathomRSZ28]

I am in the process of detailing my 69 Z28 engine. The intake has some normal dirt/grime and some minor staining. What is the best way to freshen this up? The intake is still on the engine and the engine is in the car. I have taken off about everything I can off the engine.

Tim

[Bryan302]

IMO, first of all please keep in mind that your original 472 intake has a factory finish that CAN NOT be replaced.  It has a sheen, or  semi gloss that was a result of the process of manufacture.  I learned this technique from a NCRS judge, clean with carb and choke cleaner and a tooth brush and rag to wipe off excess cleaner.  Brake cleaner in small amounts, in addition, works well also.

In addition, Spray-Nine cleaner is excellent for aluminum.

This process is not easy, and will take much elbow grease.  Your intake is only original ONCE.

DO NOT use A/C condenser cleaner, it will turn surface black, quick.

DO NOT use abrasive methods, scotch brite, sos, emery cloth, etc.  Your finish will be gone.  And the worst possible death of an original intake is blasting.

Bryan

[FathomRSZ28]

Bryan,
Thanks for the advise. I will start the process this weekend.

Tim

[cook_dw]

IMO, first of all please keep in mind that your original 472 intake has a factory finish that CAN NOT be replaced.  It has a sheen, or  semi gloss that was a result of the process of manufacture.  I learned this technique from a NCRS judge, clean with carb and choke cleaner and a tooth brush and rag to wipe off excess cleaner.  Brake cleaner in small amounts, in addition, works well also.

In addition, Spray-Nine cleaner is excellent for aluminum.

This process is not easy, and will take much elbow grease.  Your intake is only original ONCE.

DO NOT use A/C condenser cleaner, it will turn surface black, quick.

DO NOT use abrasive methods, scotch brite, sos, emery cloth, etc.  Your finish will be gone.  And the worst possible death of an original intake is blasting.

Bryan

That is exactly what I use.  Carb cleaner, brass brush (only in heavy areas) & a tooth brush.

[FathomRSZ28]

Started on a small area tonight...remarkable results. Thanks again

[z28z11]

I sent my '68 Z intake to Jerry McNeish. Well worth it - plus he removes the lower splash shield, cleans and replaces it so it won't fall off when you button the engine up. He'll repair details if you authorize.

I've always been a fan of doing my own work, but he's got the process down pat. Next up for me will probably be my original '69 valve covers, followed by my 499 distributor and the 467; the 480 looks pretty darn good as it is -

Regards,
Steve

[ko-lek-tor]

oven cleaner, like Easy-Off (I get the Dollar store brand), works well too.

[Bryan302]

Tim, that's great, just don't give up.  You'll be amazed in the end.

Darrell, please try and find some Spray-Nine, extra strength or industrial strength in a large spray bottle.  You might have to go to a industrial supply house, but it's available.  Used along with carb and choke, and brake cleaner, the Spray Nine is an extreme aluminum cleaner to use in addition.  You will be amazed.  I cleaned my entire Muncie and bell housing after dis assembly with this same process and it is spotless.  Just soak it and walk off a few times, then use the carb cleaner and brush.

Bryan

[sixt9x33rs]

I have had good luck with Simple Green.