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Author Topic: Engine angle, how important?  (Read 2921 times)

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Offline dr knockers

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Engine angle, how important?
« on: March 06, 2013, 10:30:29 AM »
I'm installing a v6 24v lump in a cortina, however the engine tilts back maybe 6 degrees because I can't get the t5 gearbox any higher or drop the engine any lower without additional fabrication, is this something I should be concerned about? I have a 2 piece prop.



Offline cossiemk2

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Re: Engine angle, how important?
« Reply #1 on: March 06, 2013, 11:45:50 AM »
My BOA is angled back a few degrees as well in my Mk2 Escort.
Never had a problem so it should be fine.

Offline Dave

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Re: Engine angle, how important?
« Reply #2 on: March 06, 2013, 14:32:56 PM »
As long as you remember to allow for it on your dipstick level, think about things like is the crank hitting the oil, is the oil pick-up well submerged & stuff like that is O.K then no worries.
Be careful of submerged turbo returns & potential crankcase breathing issues from collecting oil.
Small degree inclines won't matter but something more major could cause big problems.
Dave

Offline dr knockers

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Re: Engine angle, how important?
« Reply #3 on: March 06, 2013, 16:16:38 PM »
Brilliant, many thanks for replying cossiemk2 and Dave! Will double check the potential oil issues later at the workshop!

Posted this question on other forums and just some feedback from them is that i need to check the prop intersect angles. This picture was posted





Offline cossiemk2

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Re: Engine angle, how important?
« Reply #4 on: March 06, 2013, 16:57:24 PM »
Are you using a prop with the rubber donut?
That takes out a lot of vibration if the front prop is set exactly level with the box.
I've been running like this for years.

Offline TimoXr4i

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Re: Engine angle, how important?
« Reply #5 on: March 06, 2013, 22:13:29 PM »
The rubber donuts are quite weak, had a few of them ripped to pieces on various sierras, both v6 and dohc. There is a heavy duty one, used in farming machines, dunno how its called in the uk. But overhere i bought one at a landbouw mechanisatie, the same measurements, but it has a metal strap around it and its much stronger than the ford item! Oh, it was also cheaper!

Offline cossiemk2

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Re: Engine angle, how important?
« Reply #6 on: March 06, 2013, 23:01:35 PM »
I bought mine from Ford, but it's still OK.
I had my mate machine me a teflon bush to exactly centre the prop though!

Offline dr knockers

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Re: Engine angle, how important?
« Reply #7 on: March 06, 2013, 23:58:28 PM »
No rubber doughnut on the prop, just a sliding yoke onto the gearbox output.

On rods and sods the consensus is.....

the 1st part of the prop needs to become an extension of the gearbox output shaft - straight and true, after the rubber support bearing the second section of the prop need to following the phasing rule in terms of angles.


Offline cossiemk2

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Re: Engine angle, how important?
« Reply #8 on: March 07, 2013, 17:52:58 PM »
I agree but the angle on the pinion changes as you drive as well.

I fitted a shortened Atlas on mine after the standard RS2000 one and welded the axletube brackets in the same angle as the prop.

Didn't feel any difference in vibration though.

Just make sure the prop is balanced right that means front and back section.

 

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