Rick
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| posted on 26/7/03 at 01:42 PM |
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Whats the difference? 1300/1300GT crossflow?
Whats the difference? 1300/1300GT crossflow?
I have an old type 1300GT and 711m 1300 standard engine.
What I want is a 1300GT 711m
So i'm thinking rebuiling the standard 711m to 1300gt spec but I don't know the real difference.
Can anyone help?
Rick
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Gizmo
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| posted on 26/7/03 at 10:10 PM |
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Rick, bit late tonight to remember the measurable differences, but the GT head had bigger valves also a twin choke weber, different cam and a 4-2-1
fannymold. produced 72bhp from memory
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D Beddows
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| posted on 27/7/03 at 04:35 PM |
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Camshaft and carb - possibly pistons if you have the misfortune to have come across a low compression engine - but you'll be reboring and
replacing right  . Everyone seems to say the 1300GT valves were bigger but it's not true, the GT valves were bigger than standard on the 1600
engines but not on the 1300 engines.
I've rolling road tested both on a 1300 bottom end - same power, less drivability with the 1600GT valves.......unless you port the head and fit
twin webbers obviously but if you're going racing you can't - and if you're not you'd be fitting a 1600 anyway 
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Rick
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| posted on 27/7/03 at 04:44 PM |
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Thanks, so basically if I rebuild the 711m engine with the higher compression pistons(which are standard anyway) and put in a GT cam I have a 1300 GT
engine, right?
I already have the carb and manifolds.
Rick
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D Beddows
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| posted on 27/7/03 at 06:02 PM |
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Yes
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D Beddows
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| posted on 27/7/03 at 08:51 PM |
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Marvelous, it's x-flow expert time again  - yes there are a few differences between a 1300 x-flow and a 1300GT x-flow - very few, if any, of
which can be bought new nowadays and anything you buy secondhand wont be sufficiently within origional tolerances to give you any advantage.
Rick, measure the inlet valves on your 1300 head, I would be suprised if they weren't 38mm but you never know...to do the job right I'd
spend the 150ish quid it'd cost reconditioning the head which would sort it out anyway........
now duck, probable incoming 'expert' flack 
[Edited on 27/7/03 by D Beddows]
[Edited on 27/7/03 by D Beddows]
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Rick
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| posted on 27/7/03 at 10:00 PM |
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I'm ducking
Thanks
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Rick
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| posted on 27/7/03 at 10:01 PM |
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Oh dear
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D Beddows
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| posted on 27/7/03 at 10:21 PM |
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nah, I now buger all about engins me, hope my new job as rersercher for dictionryies hasn't sufferd from this
smert ass
Dave
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