Another breather hose question
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=5512
Printed Date: November-27-2024 at 4:44pm
Topic: Another breather hose question
Posted By: TRBenj
Subject: Another breather hose question
Date Posted: January-13-2007 at 4:15pm
On my '90 PCM, I have a breather hose coming off the starboard valve cover, which connects to the flame arrestor. The port valve cover has a PCV valve, which is plumbed to carb spacer.
To make sure my roller rockers will clear (and because they look cool), Ill be installing new valve covers this spring. 
On the new valve covers, the cut outs for the oil fill/breather hose are on the opposite side compared to the stock PCM covers. Does it make a difference which side the breather is on vs. the PCV? Ive seen it set up both ways, so I imagine it doesnt matter, but it doesnt hurt to ask. I could always turn the spacer around so the PCV port is on the front, which would allow me to keep the PCV on the port side without running longer hoses. If it makes no difference, Id like to put the PCV on the starboard and not remove the carb. I should now be able to close the motor box AND keep the 1" spacer with the new low profile flame arrestor* I just picked up. 
*You wouldnt imagine the trouble I went through to find this flame arrestor! Thank you to everyone who I asked/harra$$ed to swap with me, and to those who helped me with my search! |
Replies:
Posted By: 81nautique
Date Posted: January-14-2007 at 8:43am
|
Tim,
Will those taller covers clear the exhaust ok? ------------- You can’t change the wind but you can adjust your sails |
Posted By: 92cc
Date Posted: January-14-2007 at 9:40am
| It does not make any difference which side the breather and pcv valve are on. |
Posted By: TRBenj
Date Posted: January-14-2007 at 10:43am
|
Thanks 92, thats what I suspected.
Alan, these VC's are still considered "stock height" so there should be no problem clearing the exhaust manifolds. I think there would only be an issue if one were to install the "tall" style. I believe http://www.correctcraftfan.com/diaries/details.asp?ID=562 - AWhite70 and a few others have already installed these with no problem. The RR's may have fit under the stock PCM's, but they will definitely fit under these, hence the switch. ------------- |
Posted By: 81nautique
Date Posted: January-14-2007 at 12:42pm
Not to mention they're an awesome looking cover ------------- You can’t change the wind but you can adjust your sails |
TRBenj wrote:Posted By: boat dr
Date Posted: January-14-2007 at 5:52pm
|
TRB;at one of the schools i went to,either Yamaha or Mercruiser,one of the students asked a question. The "teacher" answered with a very good point.With that answer many times i have relived that day in the cla$$room.His reply was "DOES THE MOTOR KNOW".There are lots of "things a motor knows,Spark,Fuel,Timing and a host of other variables. but it don't know or care where that hose is connected........ boat dr ------------- boat dr /diaries/details.asp?ID=4631 - 1949 Dart /diaries/details.asp?ID=1533 - 1964 American Skier |
Posted By: TRBenj
Date Posted: January-14-2007 at 6:52pm
Thanks for confirming my suspicion Doc. I couldnt think of a reason it would matter, but Im far from an expert. I had seen it set up both ways, but it seemed that RH PCM's have the PCV valve on the starboard, the LH on the port. Just a strange coincidence, I guess. ------------- |
Posted By: 79nautique
Date Posted: January-15-2007 at 12:46pm
|
never knew valve covers where direcional, guess mine are bolted on backwards...NOT.
makes no difference which side it is on for the VC's or hoses ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: Tim D
Date Posted: January-15-2007 at 6:33pm
I put roller rockers on my Mustang about 8 years ago. You'll probably notice a big difference in the mid range power. I had to go with taller covers too. The bottom side toward the exhaust is tricky to screw down.
 ------------- Tim D |
Posted By: boat dr
Date Posted: January-15-2007 at 8:20pm
|
79, the question was about the hoses,PCV on port or Starbd. TRB had a good question, and did it make a difference where they were installed? Just him an answer, the facts about yours are null and void.
Whats the deal about you putting yours on backwards? We just ain't as smart as you 79, but we will keep on wishin'.............boatdr ------------- boat dr /diaries/details.asp?ID=4631 - 1949 Dart /diaries/details.asp?ID=1533 - 1964 American Skier |
Posted By: Hollywood
Date Posted: January-16-2007 at 9:21am
|
'doc, come on. That was probably the nicest post '79 ever had, he definitely could have layed into TRB but didn't. I think he deserves a little credit.
------------- |
Posted By: TRBenj
Date Posted: January-16-2007 at 9:25am
Found this quote (from Feb 2004) yesterday while doing a little searching. Found it amusing.
------------- |
Posted By: PLBC
Date Posted: January-16-2007 at 10:43am
|
Very amusing. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=5164&sort=&pagenum=1" rel="nofollow - 99 |