I hadn't heard anything from the machine shop for quite a while so I gave them a ring this morning...

The crank work will come out in the 6-700 Dollar range. He had put it on hold, but hadn't called with the news.

I told him to get 'er done.

Toys!

In a naturally aspirated, high compression piston build on the +5/16" stroker, is there a latest and greatest piston choice? Anything newer than the selection in the Stroker Article? I will be installing my 264S Cam. This engine will use 225 rods.

Now, how to explain this to my wife...


CJ

Just give her the key to the Alfa Romeo and just stick to the slant...

-D.Idiot

p.s. start researching a better cam, the 264 I think will be a bit too mild for your stroker...

So.... now for cams.

That seems to be the topic of choice around here lately!

I'll be running 3.23's behind the A904. Converter.... Hmmmm. OK...

Wanna help me decide on some bits and pieces? At the speed my machine shop is moving, we have plenty of time!

Do I have enough clearance to run longer rods with the 4.440" Stroker on 2.2 Pistons or will I have too much positive deck?
Let's see, 5/32's That put's me at +.097" with the flat tops assuming no decking of the block.

OK, zero deck with 225 rods on the 4.50" Stroker. 4.440 drops me back .003, so I don't have room for the added tenth.. or do I have room with no cut on the head... ?

Gah! My brain hurts.

Did you check where that core block was at DI? -.140" or more with the stock crank and rods? Or was it too melted to care?

Heh! Heck the Alfa has .500" Cams... Pretty close anyway, 12.5mm Euro's. It lopes real pretty! Can't I just give her the Metro? Pleeze???

CJ

With the 4.5 stroke we were going use the 198 rods would not work. We dropped the idea and then whent with the 4.25 stroke and never got back to it. As I remember even with custom pistons with the oil rings in the pin area, there still was not enough room for the 198 rods. Maybe your stroke and custom pistons there would be, but I don't think so.
PS my block was a virgin in terms of decking.

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

That was a "to do" list item when I was going to use that block for another project...since your project is kind of tight, it'll be a "assemble" with one rod and piston and no rings, measure with the micrometer/caliper/dialback indicator/etc.. then take back to machinist if needed or adjust with the appropriate head adjustments...

The other way to do it, is to measure the crank centerline (put on caps and mic.), then measure from the top of the crank bearing journal to the deck, this is kind of crude and subject to quite a bit of "speculation", as things will change a bit when it's line bored...

-D.Idiot

All the bits and pieces are flung to the far corners right now. It's going to have to wait until the crank comes back to the Machine shop for mocking up the bottom end.

As this will be an infrequent weekend racer only, spending most of it's life goofing around on the street, I'm wondering just how much cam I need. The converters that fall within the budget are 2200 or so stall when used with the small block application. That would put my build somewhat lower. The question is where. I was taking a WAG at around 1800-1900 RPM.

In order to choose a cam, I'll need to work up where this thing is going to actually run. If there is a better choice, I will need to liquidate the full 264S kit.

Do you have a cam in mind? The redline is aproximately 5300 RPM. With the 225 rods, the rod ratio with the 4.440" stroke is just barely over 1.50 ....or did I mess up the math?



CJ

If the stroker motor has a nice big low end torque curve (it's gotta be something like a 200 hp @3000 and 280 ft. lbs up to 2500 maybe), I'd find something that can sacrifice a little of that and give a bit more HP (the 264 is really tame), that Erson cam is looking kind of good as long as the LSA isn't too tight...

You can always run the 264 and break the engine in with it, knowing you'll be doing a cam swap in the near future to get more potential out of the mill...(of course I said that with the 252, and 45k later I still haven't swapped out the 252...)

-D.Idiot

I have a Comp 264 in my car....and its a yawner. It was free and I only have a Super 6 with BBD....but 9.25:1 and a built head with OS valves. I would go for the Erson 270 or similar...

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Yeah....Im the one who destroyed this rare, vintage automobile.....

OK, wheres that Erson group buy post!

I take it the spring kit and lifters with the 264s need to go the way of the Dodo.

I'll put them in the "Fer Sale" section.

Hey! Flowers work! I ordered a new lathe tonight, ...with permission! I need to bring posies home more often!



CJ

A 198 rod will fit with a 4.5" crank and the right piston. Even a 4.6" crank could be run and still not have the pin in the oil rings.
If the rings do get in the oil ring lands, it's no big deal, there are pin bore buttons ,with ring lands, that will support the ring at the pin bore.

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Slant Cecil

Of which piston do you speak... er...Post?

CJ

you might keep it and do the cam swap in the 74 -4 door as an "upgrade" on it's stock engine...

-D.idiot

"all these parts and what to do next!!!!"

I have a 264s and it feels fairly stong.......but it is installed in a .030 over 170 Hyper-Pak.
HyperValiant

_________________
1960 Hyper-Pac Valiant(rolling test-bed)
1963 Valiant V2OO(Son's summer project,- he just turned 15 )
1972 Valiant 4dr(Daughter Kelly's repair in progress)
1974 Valiant (v8) daughter Kelly's work in progress

BTW,I ordered a Erson 270 and lifters for a 225 project engine Im building for my Dart.
HyperValiant

_________________
1960 Hyper-Pac Valiant(rolling test-bed)
1963 Valiant V2OO(Son's summer project,- he just turned 15 )
1972 Valiant 4dr(Daughter Kelly's repair in progress)
1974 Valiant (v8) daughter Kelly's work in progress

double post

_________________
1960 Hyper-Pac Valiant(rolling test-bed)
1963 Valiant V2OO(Son's summer project,- he just turned 15 )
1972 Valiant 4dr(Daughter Kelly's repair in progress)
1974 Valiant (v8) daughter Kelly's work in progress