107 and 180 Sport Heads

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voodoo
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107 and 180 Sport Heads

Post by voodoo »

Hi Guy's, can anyone possibly tell me what the differences are between the 107 and 180 heads?

Many thanks in advance,

Graham.
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Re: 107 and 180 Sport Heads

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Last edited by AnonymousUser on Mon Sep 10, 2018 6:00 pm, edited 1 time in total.
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voodoo
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Re: 107 and 180 Sport Heads

Post by voodoo »

Hello John,
Thanks for your response.
-Yes I had seen that page and I appreciate that there is the core plug difference.

I was more interested in port shapes, port wall thickness' etc. etc.
-To see if the 107 casting was better/ worse than the 180 casting from a "basis for modification" point of view.

Thanks again!

Graham.
The Nun
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Re: 107 and 180 Sport Heads

Post by The Nun »

180 is the best as it was the final design they did and has the better casting and more material for modding.
However Sport heads can crack around the middle fixing bolt lug especially if they've been skimmed or wills rings fitted and not fitted with the correct thickness outer gasket. A point to check if buying one.
Peter Nunn...ey im member 00033
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voodoo
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Re: 107 and 180 Sport Heads

Post by voodoo »

Thank you for the comments Peter.
Yes, I was aware of the cracking, having seen several with a run of welded as reinforcement in that area.
(I was not aware that the Wills rings mod was the cause of weakness!)
-I have both types, so wanted to know which to invest the time/ money on modifying.

Kind regards, Graham.
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Re: 107 and 180 Sport Heads

Post by bazzateer »

The Wills ring mod may be one cause but it's not the cause, I've had at least one normal head go there.
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