Hi All,

hypothetically speaking, if you were taking out a 1300 xflow to replace with a 1600 xflow, it would make sense.

Now what if while rebuilding the 1600 you found out it was a 1600 +0.030, and had a piper 285 cam. but then when taking the 1300 out you found it was a 1300 +0.090, and you havent even taken the bottom end apart yet to see what it is.

What would you do?

fit the 1300 back after checkling the bottom end.

fit the 1600 in?

take the best both and build a monster?

this hypothetical person is very confused?


also this hypothetical person is planning on selling the other engine when finished....

Put the 1300 +90's in the 1600 , along with the 285 cam , big valve the head , lighten the flywheel and top it off with throttle bodies and a megasquirt

Fit a Zetec, or even better a bike engine and sell the x-flow engines to men in flat caps / crash helmets

ditch the x-flow and the zetec and stick in a cosworth turbo!

I'd have the 1.6 bored for the 1.3 pistons

Actually, we sold our knackered and smoking 1.6 xflow on ebay to a weirdy-beardy type who drove a round trip of over 300 miles to give us £200 for it

We bought a Zetec with most of the bits for RWD for £50 of the cash to replace it...

I'm sticking with xflow for now thanks

any one else?

best of both. Make the most sense

stick with it.
(crossflow--- its the future)

No substitute for cubes, 1600.

Why else would you overbore a 1300 unless you were trying to grow it.

1300 flywheel may be lighter so have a wiegh up

I'd be tempted to look into making a nice crossflow from the best of both. It is a light engine (for a ford) and can be tuned to 150 BHP without much trouble. Sure, a zetec can be made up to 150 easily enough but if its heavier are you better off? Your crossflow will fit back into your car without any changes needed.

Of course it might end up costing you a fair sum to make up the crossflow so you might be as well spending it on something better.

If you can fit all the good bits to your 1600 block you could make a nice little lump.

As has been said, stick the 1300 pistons in the 1600 block - the 1300 sump might be a bit shallower than the 1600 which might be handy but the flywheels will probably be the same weight (but obviously worth checking in case someone's put an 1100 one on which would be lighter). The con rods will be the same (worth weighing them if you're taking it all apart to see if they've been balanced) but you wont be able to use the 1300 crank in the 1600.

Stick with it - I know it's SERIOUSLY unfashionable to suggest that a kit car with a free revving 100-120bhp engine is actually much more fun to drive than one with 350 but......

Be aware the 1600 is 1" taller than the 1300 ..... wonder how they got the extra 300cc?

make the best of both worlds and have a 'proper' engine in your seven.

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Originally posted by D Beddows
- the 1300 sump might be a bit shallower than the 1600 which might be handy

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Stick with it - I know it's SERIOUSLY unfashionable to suggest that a kit car with a free revving 100-120bhp engine is actually much more fun to drive than one with 350 but......

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How about sell both existing engines either as a package for someone wishing to spend and tinker to produce one decent engine or to 2 separate parties?

You could then use money + part of what you would be paying the engineering shop and for sundries and gaskets etc to buy a 1760 x flow or similar from a westfield owner who is up grading to a more modern power plant. That way you get everything matched and ready to pop in on a wet Sunday afternoon.

- it seems as if once theyhave a new engine the old one goes down in their esteem very quickly. You mightbe lucky!

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Unfortunately the 1600 crank will just clatter against the 1300 sump... don't ask how I know.

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Too true! My ~100BHP car will see off all chav-mobiles and more than a few sports cars, is pleasant to drive, and is utterly predictable on twisty roads.

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excellant list of ideas, and I suspect all have been covered. I defo gonna have to have a good think about this now, as my little brain is hurting.

any one else got any possible solutions?

1300 for lower road tax, and supercharge it.
See this months PPC.

what is it exactly you want to do?

if you want to fit the 1300, then fit that.

if you want more bhp, then there is no substitute for cubes, hence you would fit the 1600.

you will pax more rad tax though.

if you want even more bhp, then you would look at modifying the 1600.

for example:
fitting 1300 pistonswill raise CR
fitting light flywheel
fitting larger valve head
fitting wilder camshaft

and so on.

now there is some misinformation in this post.

1. the 1600 engine is more like 30 mm taller than the 1300
2. the conrods for the 1600 are longer than the 1300 engine

Aww come on, I'm 5mm out - its not that much, honest

(I did think I'd written "about an inch" so apologies all round)

right here's my plan.

I'm gonna fit the 1600, and make sure it works then, rebuild the 1300 for someone else to use (got loads of spares)

just one more question.

does the Piper 285 cam require modified pistons? or are standards ok?

quote:

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Originally posted by MikeR
Aww come on, I'm 5mm out - its not that much, honest

(I did think I'd written "about an inch" so apologies all round)

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Realy? while I'm quite willing to admit my specialist subject is the 1300 crossflow I was always under the impression the longer 1600 stroke was generated by a longer throw crank than the 1300 and it was the 1100 that came with longer conrods........ like I say, quite willing to admit I may be wrong though

And any ideas if a 285 cam needs mods to pistons?