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| Thick flange vs thin flange 1100S https://www.ausmini.com/forums/viewtopic.php?f=2&t=88282 |
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| Author: | jprior2912 [ Tue Jan 13, 2015 11:01 am ] |
| Post subject: | Thick flange vs thin flange 1100S |
Hi all There is an 1100S engine I am interested in buying. I can only get limited info from the owner at present inc engine number. I am assuming the later thick flange block is slightly better? Does anyone know around what engine number they swapped to a thick flange? Cheers James |
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| Author: | drmini in aust [ Tue Jan 13, 2015 11:16 am ] |
| Post subject: | Re: Thick flange vs thin flange 1100S |
I have had to build both thin and thick flange 1100S, IMO both are as good as each other. These blocks are both much stiffer than a Cooper S block so the same criticisms don't apply. [edit] at 12YD/Ta/H7611 they were still thin flanged. 12YD/Ta/H8667 is a thick one. So somewhere in between 7611 and 8667.... they changed. |
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| Author: | jprior2912 [ Tue Jan 13, 2015 11:48 am ] |
| Post subject: | Re: Thick flange vs thin flange 1100S |
drmini in aust wrote: I have had to build both thin and thick flange 1100S, IMO both are as good as each other. These blocks are both much stiffer than a Cooper S block so the same criticisms don't apply. [edit] at 12YD/Ta/H7611 they were still thin flanged. 12YD/Ta/H8667 is a thick one. So somewhere in between 7611 and 8667.... they changed. Thanks Doc - typical - the one I'm interested in is right in the middle of those numbers.. 79xx. I read somewhere that they changed from a small to large journal crank too? Would that make much difference either? |
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| Author: | TheMiniMan [ Tue Jan 13, 2015 12:18 pm ] |
| Post subject: | Re: Thick flange vs thin flange 1100S |
the change from small journal to large journal didn`t happen at the same time as thin flange to thick flange tho |
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| Author: | drmini in aust [ Tue Jan 13, 2015 12:21 pm ] |
| Post subject: | Re: Thick flange vs thin flange 1100S |
TheMiniMan wrote: the change from small journal to large journal didn`t happen at the same time as thin flange to thick flange tho They changed from small journal to large around 12YD/Ta/H10500. I'll dig out the actual number shortly. [edit] it was at 10487/10488. Personally I prefer the small journal. Large journal cranks have poorer counterweighting and their rods are lots heavier. |
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| Author: | jprior2912 [ Tue Jan 13, 2015 12:54 pm ] |
| Post subject: | Re: Thick flange vs thin flange 1100S |
drmini in aust wrote: TheMiniMan wrote: the change from small journal to large journal didn`t happen at the same time as thin flange to thick flange tho They changed from small journal to large around 12YD/Ta/H10500. I'll dig out the actual number shortly. [edit] it was at 10487/10488. Personally I prefer the small journal. Large journal cranks have poorer counterweighting and their rods are lots heavier. Thanks Doc 
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