Let's play a game called I have a good 1.7 L bottom end Options

[Tdskip]

Keep it clean gentlemen - grin.

So I find myself with a perfectly good 1.7 L bottom end, give me a radio is on what to do with it to get more power out of it as cheaply as possible but ending up with a reliable and street where the motor.

Take me to school here please, thanks!

[JamesM]

What is more important here, cheapest price or overall power increase? And what is your definition of cheap?

...because a 2257 would be a nice kick in the pants. If you are going to spend the time an money to swap pistons and most likely the cam anyways, why not go all the way?

https://aapistons.com/collections/engine-re...kits/type-4-914


https://aapistons.com/collections/cylinder-...eads-44x36-pair

[Tdskip]

What is more important here, cheapest price or overall power increase? And what is your definition of cheap?

...because a 2257 would be a nice kick in the pants. If you are going to spend the time an money to swap pistons and most likely the cam anyways, why not go all the way?

https://aapistons.com/collections/engine-re...kits/type-4-914


https://aapistons.com/collections/cylinder-...eads-44x36-pair

If I go this route it's going to be heavily budget driven, and I was also thinking it would be easier for me to tackle if I don't have to split the case. Putting a camera and would require me to split the case, right?

[JamesM]

If I go this route it's going to be heavily budget driven, and I was also thinking it would be easier for me to tackle if I don't have to split the case. Putting a camera and would require me to split the case, right?

If you dont split the case pretty much the only thing you can do will be 96mm pistons and head work but I dont know if I would bother doing either one on a stock cam as you really need the right cam to make the most of it. If the heads are 1.7 machine work will be necessary to fit the 96mm cylinders so you are probably looking at $500-1000 just to get a 1911 on worn bearings with a stock cam, sure you could do it but any gains would be minimal so you would have to decide if it is worth it to you.

If it were me, I dont know if I would bother changing anything without also changing the cam but if you split the case to do the cam might as well have some fun.

We probably should have asked what you are using for fueling as that will make a difference in what you can do cheaply with the motor itself.

My thoughts, in order of cheapness:

1. Hot cam + headwork + lightened flywheel. (keep it a 1.7 but wake it up a bit)
2. above +96mm P&C (Hot 1911, add about $300 over #1 )
3. above + everything needed to 78mm stroke (AA 2257 kit, add 1500-2k)


The thing is if you go with #1 or #2 dont ever drive/ride in anyones car with a 2257 or 2270 as you ill regret having spent the money and not having just gone with #3.