170 can be converted to 188?

[Anonymous]

hi, i have a 170 4 mains block, bore 3.5 and stroke 2.94
the 188 (i know it has 7 mains) has 2.94 of stroke too, but bore 3.68

can i over bore it to 3.68? or the cylinder walls will be very thinner? because i can buy the forged pistons for the 188 and a SP head.

i dont speak english very well, sorry

EDIT: i´m planning put a mechanical cam (to rev up to 6000 rpm no more), a 4 speed gearbox, rods hand polished, the sp head ported and polished and the holley 2300 carb. can be dangerous over bore it with this stuff??

bye!!

 

[Asa]

where are you? the US or elsewhere?
and what language do you speak? i'd bet that someone here would be able to help you out with that if you run into a problem

a 188 is a destroked 200
to get that, you put a 170 crank in a 200 block

the hard part comes when you try to get the crank
in the US, if the seven main bearing 170 cranks were produced they are very rare
and if you used the 4 main bearing crank, then some say that it would be pointless to do because the advantage of the 188 is the high RPMs it can obtain

for a quick overview check this thread
http://fordsix.com/forum/viewtopic.php? ... highlight=

 

[addo]

Our friend is from Argentina. Hence the comments about an SP head.

You sure can't overbore to 3.68! Another motor is the best option here, if you want the extra performance.

Regards, Adam.

 

[Anonymous]

Our friend is from Argentina. Hence the comments about an SP head.

You sure can't overbore to 3.68! Another motor is the best option here, if you want the extra performance.

Regards, Adam.

yes i am from argentina. another motor will be great but my 170 has 2000 miles only, i can put a 221 but here we have legal issues with the motors. we cant just put another motor and go as you guys, stupid burocracy... :x

 

[xctasy]

It wasn't until 1963 that American Fords were thinwall. The early US 144 was taken to 155 cubes in early 1960. This was a 3.175 mm overbore. That's 194 Chevy piston size at 3.625"

How brave are you to do international trade?

There are some 3.632" Ford pistons here which fit the 1998 to 2005 Fords. They can be fitted to the 5.25" Holden Starfire/ Toyota IX/XT5/XT6 rods. Offset grind the crank to 3.15" stroke using 1.899" Holden bearings on the stock 170 crank.

Result is 3209 cc, or 196 cubes, a 15.3% boost in capacity.

You have to add a 185 thou (4.7mm) copper gasket or a 125 thou (3.175mm) steel plate made to gasket shape with two 30 thou (0.76 mm) gaskets to allow for the pistons comming out of the block 185 thou.

Look at the Argie 504 or other local cars and see if there are any special pistons and rods that could perform the same function.

 

[Anonymous]

It wasn't until 1963 that American Fords were thinwall. The early US 144 was taken to 155 cubes in early 1960. This was a 3.175 mm overbore. That's 194 Chevy piston size at 3.625"

How brave are you to do international trade?

There are some 3.632" Ford pistons here which fit the 1998 to 2005 Fords. They can be fitted to the 5.25" Holden Starfire/ Toyota IX/XT5/XT6 rods. Offset grind the crank to 3.15" stroke using 1.899" Holden bearings on the stock 170 crank.

Result is 3209 cc, or 196 cubes, a 15.3% boost in capacity.

You have to add a 185 thou (4.7mm) copper gasket or a 125 thou (3.175mm) steel plate made to gasket shape with two 30 thou (0.76 mm) gaskets to allow for the pistons comming out of the block 185 thou.

Look at the Argie 504 or other local cars and see if there are any special pistons and rods that could perform the same function.

thanks for the info xtaxi, but here we also have the 187 4 mains, whats the difference with the 170??

look, with the 170, stock pistons, sp head ported and polished, 2 barrel carburetor (the holley 2300), mild cam and headers, balanced alternative mass, sinterized clutch, and a 4 speed gearbox, limited slip diff, can i get into the 17 sec in 1/4 mile?? 17.20-17.80 this is my goal.

but there are differences with the aussie or US 170, those cars has better performance. 0-60 in 15 sec (the argie 170 0-60 in 21 sec) standing 1/4 mile (402 mts) in 20 sec, the argie 24.8 in the 500 mts (0.31 mile).

 

[xctasy]

If you want to keep the stock block, grab 187 psitons and crank.

http://www.rm-competicion.com.ar/imagenes/datos/falcon2.gif

The 187 was a scramble of existing componets in the short 144/170 block. If you check through the details on Toro, you are perhaps aware that the 200 I6 is the same physical size as the 144, and 170?

187 had 90.42 mm pistons, 60 thou over (+1, 52 mm)
It used the four bearing US 200 CRANK, 3.12"

The 188 used a 221 tall block with seven bearing 170 crank

Argie 221 ran same crank as aussie 221.

The famous Argie race cars have a 'tall' block 188 destroked to 2.76 stroke and over bored to 183 cubes. This engine uses the Chevy 305 piston sizes and the 187 crank stroke.

Ford Falcon TC specs

Weight: 2926 lbs
CR: 9:1
Head: SP 221 (ACTC spec)
Pistons: Custom forged (330gr)
Ignition: belt driven electronic
Max RPM: 9000
Displacement: So called 188 ci (acutally 183 cubes!)
Bore & stroke: 3.748" x 2.763" / 2.771"
Carb: Weber 40 DCNF
Rod lenght: 5.905" / 5.984"
Crankshaft: ACTC spec (24gr)
Max output: 340 Hp
Trans: 5 speed

The performance on the Aussie Falcon was based on compression and the fact that the early engines ran small chamber heads.

 

[Anonymous]

thanks for your help xtaxi, so i can make it 187 over boring to 90,42 mm using the STD high compression 187 pistons , the 187 crank, but the rod and bearings are the same right??

 

[xctasy]

I'd guess that the 187 had 200 rods.

The 4 bearing 200's and all 200's ran 4.715" rods.

I'd have to go over the posts addo has on 144 and 170 rods. They were about 4.855" and 4.815" respectively, from memory.