fan shroud

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greenfyregirl
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fan shroud

Post by greenfyregirl » 16th September 2018 - 4:43pm

Hi!

How tight should i tighten my fan shroud? if i fo it too tight the thermostat flaps dont move very freely.. or should i disable the thermostat??

Thanks
:)
Clare - living in Cheltenham

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broady_6
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Re: fan shroud

Post by broady_6 » 16th September 2018 - 4:57pm

tighten? in what respect? the body to the block or two halves together?

and no, for the love of god no. disable the thermostat only if to wish to shorten the life of your engine
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purplepeter
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Re: fan shroud

Post by purplepeter » 16th September 2018 - 7:25pm

I would suspect that the rear of the fan shroud isn't properly seated & that You've set the relay lever/thermostat linkage in the wrong position?
Whip the impeller off & the head tin on 1 & 2, slacken the pinch bolt on the linkage, then loosen the back of the housing & give it a wiggle

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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 16th September 2018 - 7:27pm

whats an impeller


I am bolting the first half to the block and as i tightened it the thermostat linkage became quite stiff. I wondered if had to be torqued. i have tested the thermostat with a hairdryer- it is working.
Clare - living in Cheltenham

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purplepeter
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Re: fan shroud

Post by purplepeter » 16th September 2018 - 7:28pm

And by the way, Your lovely new dissy clamp looks good, but it needs to be under the dissy, not resting on the block as it was in yesterdays photo!

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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 16th September 2018 - 7:28pm

this is what im wondering- how can it be in the wrong position if its bolted into specific holes??
Clare - living in Cheltenham

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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 16th September 2018 - 7:29pm

lol!! ive got other things to worry about pete! a dissy clamp is easy!!!
Clare - living in Cheltenham

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purplepeter
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Re: fan shroud

Post by purplepeter » 16th September 2018 - 7:29pm

I should really have said Fan!

It needs to sit right in its position- you might have it caught up on something

Fanhousing should be vertical, so check it's not at a funny angle

then loosen the pinch bolt on the linkage

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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 16th September 2018 - 8:23pm

the fan is not in. I will check the level of the housing. the linkage is not tightened- just slotted in the hole
Clare - living in Cheltenham

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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 17th September 2018 - 10:11am

It visibly pinged off, when i unbolted it!! I think its a oil pump thread thats sticking out too far....
Clare - living in Cheltenham

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purplepeter
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Re: fan shroud

Post by purplepeter » 17th September 2018 - 1:26pm

Can't be... the engine support bar goes over the oil pump nuts
Look at the support bar/ heat exchanger area

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broady_6
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Re: fan shroud

Post by broady_6 » 17th September 2018 - 1:46pm

I'll take some photos of my engine this evening so you can see how its supposed to look. Could be handy if you post some photos of what yours currently looks like
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broady_6
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Re: fan shroud

Post by broady_6 » 17th September 2018 - 10:03pm

Yours doesnt need to be as oily or corroded as this, but this is how the oil pump engine bar and fan housing need to fit. If you arent getting hte fan housing flush then you wont be getting the fan on as it will just rub on the housing.

Image

Image

And then from the top mounting against the breather.

Image

Would be good to see similar photos of yours.
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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 18th September 2018 - 3:25pm

Image
this is a side bottom view. the blue circle is the bolt touching the fan shroud.
Image
This is from directly underneath- the red circle is the position of the bolt/thread that sticks out.
Clare - living in Cheltenham

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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 18th September 2018 - 3:26pm

They are probably not helpful, but im going to grind the bolt back. i did fit a new oil pump, which needed longer bolts...
Clare - living in Cheltenham

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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 18th September 2018 - 3:34pm

praps its the whole oil pump?? i put a new cam in and had to change the pump and it was thicker....
Clare - living in Cheltenham

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broady_6
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Re: fan shroud

Post by broady_6 » 18th September 2018 - 5:30pm

greenfyregirl wrote:
18th September 2018 - 3:26pm
They are probably not helpful, but im going to grind the bolt back. i did fit a new oil pump, which needed longer bolts...
It all become clear, you have fitted an oil pump with a thicker mounting flange. Two different pumps were offered, gears were 21mm and the other ones were 26mm gear. So the pump needed to be 5mm thicker. Why have you changed to the bigger pump? Ideally you should swap back to a 21mm pump and all will fit nicely.

Doh just seen your last message. What cam have you put in?
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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 18th September 2018 - 6:31pm

110 engle
Clare - living in Cheltenham

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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 18th September 2018 - 6:31pm

:D
Clare - living in Cheltenham

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broady_6
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Re: fan shroud

Post by broady_6 » 18th September 2018 - 9:59pm

Ahhh, ill have to do some remembering as to what the oil pump requirements are there. i seem to recall there are both thicknesses of pump in both 3 and 4 rivet cam variety. could be as simple as a pump change. ive got an engle 110 in one of my engines and its got great oil pressure, but i cant remember what pump i used at the minute.
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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 18th September 2018 - 11:36pm

i changed the cam and the pump to match. think it was a schadek 26mm. will it matter to the fan shroud set up tho?
Clare - living in Cheltenham

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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 18th September 2018 - 11:37pm

Do earlier than 70 cars have a different fan set up?
Clare - living in Cheltenham

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broady_6
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Re: fan shroud

Post by broady_6 » 19th September 2018 - 7:42am

The fan is the same on them all. the 26mm bit is the problem. I cant for the life of me remember how I solved it. The engine is in storage at the minute. I will have a look at it at the weekend.

As long as you can get the fan housing to sit flush so that the fan doesn't catch and the thermostat linkage is free and working then it doesn't matter if you've got a 21 or 26mm pump. Is your engine otherwise stock?
The sultan of swing

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greenfyregirl
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Re: fan shroud

Post by greenfyregirl » 19th September 2018 - 8:10am

Yes, well the fuel injection is replaced by carbs. solex 32s
I did wonder about washers/shims- if filing the bolt doesnt help. im trying later...
Clare - living in Cheltenham

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purplepeter
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Re: fan shroud

Post by purplepeter » 19th September 2018 - 8:47am

Were Barry & Rich overseeing the build?
Just wondering if anyone checked that the oil galleries in pump/case lined up ok?

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