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Boring a 1.6

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Offline wildgoody

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Re: Boring a 1.6
« Reply #15 on: December 19, 2004, 02:33:59 PM »
Quote
What is the bore and stroke of a 1.6?



75mm bore 90mm stroke = 1590cc

The displacement formula for a 4 cylinder engine
is bore x bore x stroke x .0031417

Wild

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Offline wildgoody

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Re: Boring a 1.6
« Reply #16 on: December 19, 2004, 02:44:10 PM »
Quote
How about a 1.6 based 3.0?? I talked with a local machine shop lately about upsizing dramatically. It seems as though it can be done, a lot of custom machining and custom head gasket and pistons. The cost is pretty high, though. I was told about $3,000 for the completed long block! But you don't have to adapt another motor or trans into your truck. The power is supposed to be about 220hp with like 230-250lb-ft of torque! Pretty cool, huh?



Not really a good idea, the largest 4 cylinder
engine was a 2.6 Mitsubishi, and had to have
ballance shafts (rotating weights) to get it to
run smooth and not tear it's self up

If you were to go 10mm on both bore and stroke
you would get 2270cc and thats pushing things,
you would be looking at new pressed in cylinder
sleeves, and a custom forged crank (stock cranks
are hollow  :o  )

Realisticly a 1.8 or so is the limit in the 1.6 block
and that would be a little pricey, but affordable

Wild
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Offline cj

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Re: Boring a 1.6
« Reply #17 on: January 01, 2005, 07:59:15 PM »
Mazda Miata 78mm pistons have been used for the big bore conversion. Also there was a Mazda turbo in OZ that has 78mm pistons with a higher silica content. Get a new head gasket made to suit the bore. There is also an oversize available. It is also recommended that the block be re-sleeved with thicker liners to allow for the boring.
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Offline SiKiD_01

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Re: Boring a 1.6
« Reply #18 on: January 01, 2005, 08:16:13 PM »
this thread is good, lots of info.

but will it be any use/good if you ONLY stroke the engine? or if you ONLY bore it out?

if either requires new pistons crank etc. it wouldnt be worth it.

is that what they do to V8's? just stroke them?

still learning.

thansk
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skyhighsami

Re: Boring a 1.6
« Reply #19 on: January 02, 2005, 10:38:34 AM »
what type of power would a 1.6 bored and stroked to 1800 make and how much would this cost? Would this be good instead of forced induction or with?
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Offline wildgoody

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Re: Boring a 1.6
« Reply #20 on: January 02, 2005, 11:26:32 AM »
A 3mm stroked crank  (96mm stroke)
2.5mm Oversize pistons (77.5mm bore)
will give 1811cc  77mm bore will give 1788cc

An engine this size in 8V format would give
about 100HP and in 16V about 115HP

To compensate for the longer stroke I
would go with shorter custom rods and
those are about $500 a set of 4, pistons
I think some forged Wiesco low compression
for turbo would be a good match

In turbo 16V trim this motor will be pushing
200 HP, maybe more.

A stroked crank will cost $250 plus you need
a core or more $$  so in the ballpark parts
would be $1500 plus assembly so a 1.8L
stroker motor will set you back about 2 grand

Wild
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Offline 1bigtracker

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Re: Boring a 1.6
« Reply #21 on: January 02, 2005, 11:49:37 AM »
Quote
A 3mm stroked crank  (96mm stroke)
2.5mm Oversize pistons (77.5mm bore)
will give 1811cc  77mm bore will give 1788cc

An engine this size in 8V format would give
about 100HP and in 16V about 115HP

To compensate for the longer stroke I
would go with shorter custom rods and
those are about $500 a set of 4, pistons
I think some forged Wiesco low compression
for turbo would be a good match

In turbo 16V trim this motor will be pushing
200 HP, maybe more.

A stroked crank will cost $250 plus you need
a core or more $$  so in the ballpark parts
would be $1500 plus assembly so a 1.8L
stroker motor will set you back about 2 grand

Wild

so 2 G's plus a custom header, turbo, intercooler, piping, fuel managment and you'd be about 6 to 10 grand into it.  not really for me...

stu
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Offline wildgoody

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Re: Boring a 1.6
« Reply #22 on: January 02, 2005, 11:56:23 AM »
Turbo setup should be about $2500
so not 6-10 Gs but a good $4500-5000
would be a good estimate, and to have
it a turn key setup, not too bad, kits will
save you some $$ as always you do it
yourself and save.
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skyhighsami

Re: Boring a 1.6
« Reply #23 on: January 02, 2005, 12:12:30 PM »
Who would I get to build all the rods and pistons and who would I get all of that from. Also I am SPOA with a 31 and I have a set of dana 44 from a Jeep Wagoneer and plan to run a 35super swaper tsl or a 36 irok. I know that I will not be able to break an axle but how strong is the trans and tcase. I got both from Trail Tough(SUPER PEOPLE) in 03-04 so they have maybe 600 miles on them. If the motor is built what will break next?
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Offline wildgoody

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Re: Boring a 1.6
« Reply #24 on: January 02, 2005, 12:16:59 PM »
I have a supplier for the crank, but
it requires you to have one to send.

I have a supplier for the rods, but I
just found them, good prices on rods
about half of some others, and the
pistons are forged replacements from
Wiesco, model to be determined by
the bore you want to use

Wild
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skyhighsami

Re: Boring a 1.6
« Reply #25 on: January 02, 2005, 12:20:03 PM »
what would you think would be a good set up for someone that rarely drives their sami and is a power fiend
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skyhighsami

Re: Boring a 1.6
« Reply #26 on: January 02, 2005, 12:21:04 PM »
And wanted to do a 4.3 to begin with but everyone said that it would upset everything that was great about the little sami
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Offline wildgoody

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Re: Boring a 1.6
« Reply #27 on: January 02, 2005, 12:24:52 PM »
How do you drive it (rocks, mud, trails, sand??? )
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skyhighsami

Re: Boring a 1.6
« Reply #28 on: January 02, 2005, 12:27:37 PM »
No sand I live in Alabama, I do alot of climbing, mud and not any major rocks now.
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Offline wildgoody

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Re: Boring a 1.6
« Reply #29 on: January 02, 2005, 12:32:56 PM »
Sand and mud have a similar high power
requirement, a stroked motor will have more
torque from it's longer "lever" with the crank
and the larger bore also increases power from
less required pressure to do the same work.

But for a power fiend Turbo is the only thing
that gives the power and acceleration that
will blow your mind ;D and possibly your driveline

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