1.6 internal's fit into a 1.3 block????

[pimpinphil]

i tried a search,and it's not working for some reason for me,anyways i was wondering if anyone could tell me what the difference is between the 1.3 and 1.6 engines? what i am looking at is rebuilding the 1.3,and was wondering weather i could put the 1.6 internal's into the 1.3 block?thanks alot.

[Amos]

I'm no expert by any means...

but me things that .3 litres would give you QUITE a bit of problems.

[marinepolice03]

im almost positive that the 1.6. has bigger internals then the 1.3. where are you located at? Their might be someone around you that can help. ( you can update your profile in user cp with your address)

[TominMO]

Since it's basically the same motor, and they're inexpensive cars, probably they simply bored out the block to accept 1.6 sleeves and pistons. Doubt if there is any change in stroke, because they would have to change the crank, which is more expense. The 1.3 motor will last a long time, so it's over-engineered stengthwise; which further makes me think there is simply a bore change. And a different head of course.

If the motor still works, why not just try to source a 1.6? Direct no-brainer drop-in.

[blkfordsedan]

From what I understand, the only difference is the pistons (7mm larger bore) and the larger valves in the B6 head. I don't know if the B3 block can be safely bored out to accept B6 pistons or not. If they use sleeves like TominMO says, then the expense would be higher. Even though the bearings and crank stroke is same, the crankshaft counterweights/balance may be different due to the heavier pistons. Don't know for sure, but wish I did.

To do it right, you'll really need a B6 head and exhaust manifold for the added flow and for proper compression ratio. If you get a 2nd gen B6 head, then you will also need the intake manifold...................basically, you need a B6 donor engine. One thing you may consider, the MAZDA blocks & cranks are pretty tough. Even with high miles, they rarely need machined. If you can find a high mile B6 core for cheap, you can rebuild it for the same cost as rebuilding a B3. Plus, you may get by without the additional expense of boring the block. If you try to fit B6 pistons in a B3 then you WILL have to bore it. If the cranks are identical, then you could use the best crank you have and save some money there as well.

If your going to rebuild the motor anyway, may as well just start with a cheap B6 core. The results will be well worth the additional $100 or $150. It will run a lot better than just putting B6 pistons in a B3 block with a B3 head.

[JPT]

I don't think it's possible for a B3 block to be overbored 7mm and still have enough metal left for a stable cylinder wall (I doubt there would be enough metal left for a cylinder).

If you're going to spend the money to machine the B3 for larger pistons, why not start with a B6? It's basically the same block and an overbore of that would get you even more displacement.

[eurotiva]

Where are you located.....I may have a b6......

[NovaSS]

Its a bigger bore block and is cast that way. Dont try to bore a 1.3 that much.

Since the pistons are bigger they are heavier, the crank will be balanced for the pistons so with out re balance they will not swap across the board


there is also tow different crank snout diameteres across the board.

just find a complete 1.6 and rebuild it and drop it in.

[eurotiva]

Or a good running b6 and just drop it in. They are so common that i see no need for a rebuild, unless your just wanting to. And they can be had for cheap.

[blkfordsedan]

Or a good running b6 and just drop it in. They are so common that i see no need for a rebuild, unless your just wanting to. And they can be had for cheap.

I wish I could say that here! I can't find any B6s (or even B8s) around me local. If I go 150 to 200 miles away I can find one with 150K to 200K+ miles for $400 to $500. However, I can get all the B3's I want from Aspires with under 50K miles for $200 a pop. I can even get a couple BPs with low miles for around $200 each. I know a BP would be super fun, but I really want a B6 for the stock appearance, MPG and lower weight. I would just like to have more power on the open road without sacrificing too much mileage. Besides, If I do a BP swap then I'll just be disappointed with my Mustang.

[getnpsi]

this begs the question if a b6 can be turned into close to 1800cc, using oem sized pieces from other makes. Living in nazi-fornia as FB71 likes to call it, I think that way.

[blkfordsedan]

this begs the question if a b6 can be turned into close to 1800cc, using oem sized pieces from other makes. Living in nazi-fornia as FB71 likes to call it, I think that way.

I guarantee there is a way to do it, you just have to know all the B6 specs like the deck height, main & rod journal diameters, piston pin diameter & compression height, etc..
Then you need resources for the same on other makes of engines. It's easy on American V8's cause all that info is published in catalogs and there is so much to work with. Several years ago, you had to make your own stroker kits using creative machine work and components from other brands/styles of engines. Now, especially with a small block Ford, you can mail order a cast stroker crank, rods and pistons. With the right combo, you could offset grind the crank and probably get close to 1800.

[getnpsi]

10.25:1 compression b6 with a ported head running premium fuel would have as much output at a 1800 stroker im sure. It could be easier as i can't machine things and really don't have the hookups. Just throwing out ideas to people who do have the resources to make it plausible.

[blkfordsedan]

10.25:1 compression b6 with a ported head running premium fuel would have as much output at a 1800 stroker im sure. It could be easier as i can't machine things and really don't have the hookups. Just throwing out ideas to people who do have the resources to make it plausible.

I agree. But a B6 stroked to 1.7 or 1.8 with same ported head & compression and a good rod-to-stroke ratio would make even more power and require less octane. When head flow is limited (like on an 8V SOHC) more displacement is the key. The only time such an endeavor would be plausible would be for factory appearance. Especially when you can just drop in a B6t or BP and get there easier and cheaper. But it is fun to imagine!

[pimpinphil]

hi,
thanks for all the input, i was looking at the bp swap,however i really wasnt to interested in cutting the holes in the firewall,and notching the frame.and the b6's around here are pretty hard to come by. i also was thinking of just rebuilding the 1.3 and turbo'ing it. my girlfriends dad owns a muffler shop,so the custom pipe work wouldnt be any problem.
i basically dont want a race car. i live in wester md,and have a good deal of mountain's around us,so a few more ponies to help me get over the hills would be great. i
i did find a b6 out of a mercury capri,"non turbo" model,although,the way i understand,there is a good deal of wiring for the 1.6's??? anyways thanks alot for your time.and happy holidays.