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Adding coolant lines to the heads?

Posted By MD55Bird 15 Years Ago
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MD55Bird
Crazy Posted 15 Years Ago
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Hitting on all eight cylinders

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Last Active: 15 Years Ago
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Hello Everyone,
  I'm new to this forum (Great place you all have here) and a bit new to the Y Blocks. I have now formed a love/hate relationship with my recently built motor.Crazy It’s a .030 292, all new valve train w/ hard seats, John M cam and blue thunder intake, headers, electronic distributor, road demon jr. 625 carb, high flow water pump and aluminum radiator w/ electric fan. Transmission is an AOD. A/F ratio ranges from 12.8 to 13.2 during driving and 12.2-12.5 at idle. Timing at idle is 14 with total at 38. I have tried switching from a 180 to a 160 deg thermostat with no change.
  As long as I’m doing 30mph or more the temps are fine but when I stop the temps climb up to 205 rather quick. I have confirmed the gauge with both IR readings and a second gauge that had NIST calibration. I have the fan on manual override to eliminate the fan temp switch.
  When I built the engine I did not drill the small holes in the deck as many do. My question is: Would it do any good to add a cross over in the rear section of the heads by connecting the 2 pipe plug ports that are on the heads right behind the intake manifold? This is a popular mod on many other engines and some intakes add this feature.
  Any other ideas and suggestions would be greatly appreciated.
 
Thanks,
   Wayne



Wayne
Located in Lineboro, MD
55 Retro Bird
65 Cobra FFR
69 Dart

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Ted
Posted 15 Years Ago
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MD55Bird (7/21/2010)
....As long as I’m doing 30mph or more the temps are fine but when I stop the temps climb up to 205 rather quick.When I built the engine I did not drill the small holes in the deck as many do. My question is: Would it do any good to add a cross over in the rear section of the heads by connecting the 2 pipe plug ports that are on the heads right behind the intake manifold?


From your description, this sounds like an air flow issue through the radiator at low speed. A coolant crossover at the back of the block likely will not help in this instance. A short cut fix (if this is an early ‘Bird’) is do away with the one inch spacer behind the water pump and then space your pulley back out the missing one inch. This has been proven to work in some instances for the parade cruiser crowd. And already mentioned is the installation of a restrictor in the bypass hose which is another quick fix for those engines that are just over the edge and need some help in bringing the termpertures back in line.

Here are some other threads on the ‘steam holes’. Those holes are obviously too small to be called ‘coolant holes’. The original intent of those holes is to simply remove the air pockets that can get caught under the decks in the block which turn into hot spots under the right conditions.

http://forums.y-blocksforever.com/Topic31939.aspx

http://forums.y-blocksforever.com/Topic10608.aspx

http://forums.y-blocksforever.com/Topic35997.aspx

And here’s a picture of said hole in a CITE head with the resultant crack going through it.

http://www.y-blocksforever.com/forums/Uploads/Images/33ad73d7-d0f5-493b-9034-0bfb.JPG



Lorena, Texas (South of Waco)



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Forum Post Adding coolant lines to the heads? By MD55Bird ( 15 Years Ago )
Forum Post Does it stabilize at 205? 205 really is nothing to worry about.... By charliemccraney ( 15 Years Ago )
Forum Post Do you have the head gaskets on correct? Front to front? If there is... By mctim64 ( 15 Years Ago )
Forum Post The thermostat only controls miniimum operating temperature.There has... By oldcarmark ( 15 Years Ago )
Forum Post I agree to what others have suggested, but would add this.
How...
By bird55 ( 15 Years Ago )
Forum Post [quote][b]bird55 (7/21/2010)[/b][hr]I agree to what others have... By aussiebill ( 15 Years Ago )
Forum Post Wayne Welcome to the forum. I do not think the problen can be... By Pete 55Tbird ( 15 Years Ago )
Forum Post [quote][b]Pete 55Tbird (7/21/2010)[/b][hr]Wayne Welcome to the forum.... By aussiebill ( 15 Years Ago )
Forum Post Oops! I guess I misunderstood the problem, I thought it was... By mctim64 ( 15 Years Ago )
Forum Post Gents, Thanks for the advice thus far. The head gaskets are... By MD55Bird ( 15 Years Ago )
Forum Post Even if I never get the car to run at a reduced temp, at least I got... By MD55Bird ( 15 Years Ago )
Forum Post [quote][b]MD55Bird (7/21/2010)[/b][hr]Even if I never get the car to... By aussiebill ( 15 Years Ago )
Forum Post Hi Wayne; Casco has a fan schroud for an electric fan with the alum.... By Eddie Paskey ( 15 Years Ago )
Forum Post [quote][b]MD55Bird (7/21/2010)[/b][hr].... As long as I’m doing 30mph... By Ted ( 15 Years Ago )
Forum Post I don't know where you are checking the temp (infared thermometer) -... By GREENBIRD56 ( 15 Years Ago )
Forum Post I check the temps with a gauge and the sending unit is in the... By MD55Bird ( 15 Years Ago )
Forum Post I'll add some blasphemy. Ford screwed up when they made the T-Bird.... By John Mummert ( 15 Years Ago )
Forum Post Do you have the 1" spacer behind the water pump? T-birds had this to... By Vic Correnti ( 15 Years Ago )
Forum Post I am running the spacer but I also have the better pump from casco and... By MD55Bird ( 15 Years Ago )
Forum Post The testing done by CASCO (results shown on their site) - shows the... By GREENBIRD56 ( 15 Years Ago )
Forum Post Hey Steve; I'm using Casco's Fan Clutch and their Blade assembly. It... By Eddie Paskey ( 15 Years Ago )
Forum Post [quote][b]GREENBIRD56 (7/23/2010)[/b] The smaller pulley has revved up... By DANIEL TINDER ( 15 Years Ago )
Forum Post All went well yesterday. It got a bit hairy when my parents got in a... By MD55Bird ( 15 Years Ago )
Forum Post I've managed to gather up a new Hayden Heavy Duty Fan Clutch and a six... By GREENBIRD56 ( 15 Years Ago )
Forum Post Howdy,


It appears that the Casco clutch and fan are...
By HT32BSX115 ( 15 Years Ago )
Forum Post agree about the shroud,and fan placement in the shroud is also... By 2721955meteor ( 11 Years Ago )


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