78mm stroke x 90.5mm bore engine combo

Ephry73 · Post by **Ephry73** » Thu Jun 29, 2006 5:45 pm

Jake,

I spoke with you last week about building an engine for the Ghia, and I have come acrossed a cheap 78mm crank(type 1 journals) and some stroker rods(Ibeam), and was wondering about getting the rest of the parts I need to assamble a longblock with what I have. It may not rev as high as the newer 2liters, but I think this will be a good foundation for somethng bigger when I have more cash.

What cam do you recommend I get to suit the smaller valves of the Q heads? I am keeping the 39.3x33mm ones with very minor port work. I don't plan on revving it too much, but should be interesting to see what I can come up with.

I will still need to get from you cam, lifters, and such.....

Just curious.

E

Eddie Brown · Post by **Eddie Brown** » Thu Jun 29, 2006 10:02 pm

E. You're crazy...LOL J/K!

Ephry73 · Post by **Ephry73** » Fri Jun 30, 2006 5:05 am

Me crazy? nah bra. Just a cheap bastid.

Hehehe

Hey Eddie, how's the 2600 coming along?

E

Eddie Brown · Post by **Eddie Brown** » Fri Jun 30, 2006 7:20 am

Ephry73 wrote:Me crazy? nah bra. Just a cheap bastid.

Hehehe

Hey Eddie, how's the 2600 coming along?

E

LOL! I bet the 90.5*78 would be fun!

I've finally begun to put TIME into it. I've been cutting to length my CM head studs. Then I'm going to finish mocking up the top end. I still have to lap the cast iron clunckers to get a better seal. Then I'll take it all apart again and take everything in for balancing. Still some road to travel...

I hope the bad weather (flooding) hasn't affected you out there. Here it's pretty muggy and hot bro.

Late,

E.

Ephry73 · Post by **Ephry73** » Fri Jun 30, 2006 7:34 am

I'm thinking it will be a good foundation for other things, once I get it setup. Right now money is very tight, but I have enough parts laying around, and things, that the 78x90.5 will be cheaper to make than a stock two liter, or to rebuild the stock type 1 engine. All I need to do now is sale the CFI to make extra cash for everything else, and I will be covered.

There is always the possibility of a 2258 or even a 2599 if and when money comes. For the time being, the 2006 will be a good snappy little motor for the Ghia.

Glad the floods didn't affect you much. I have heard nothing but crazy things with all the water we're having.

E

slowtwitch · Post by **slowtwitch** » Fri Jun 30, 2006 8:06 am

Hey E,

That's the combo I'm putting together

I just have to get rods and a balance job and I'm good to go.

pete

Ephry73 · Post by **Ephry73** » Fri Jun 30, 2006 8:11 am

Yeah, you ignited that spark with our last conversation. I think it will be great engine to start with, and then if I need to expand, go from there.

E

bj · Post by bj » Fri Jun 30, 2006 9:19 am

E,

how are you going to deal with the pin height of the Pistons? 90.5b pistions have roughly the same pin height as a type 4 94mm stock piston correct?

there was a guy (billisgr8 i think)that put in 94b type 1 pistons on his stock type 4 2.0 bottom end and didn't have to shim the barrels too much for deck height.

i don't have the measurements on me right now, but i remember reading that there was a difference.

was this the crank that was on sale on thesamba too?

bj

Ephry73 · Post by **Ephry73** » Fri Jun 30, 2006 9:24 am

The very same crank. Well, I will be building a 2258. For the money and parts I have and time, it makes sense. The rest is getting sold. I am now selling the CFI kit(again) to finish some things, and pay some bills. This will give me some peace of mind as well. With the difference I will get the 2258 engine built. Nothing fancy, but better than a stock 2 liter, and more torque than the 1.7 for sure. The Q heads I will send for boring and new guides, and just leave the valve sizes as they are until I can afford better heads.

The CR will be high, so I need to watch out for the deck height. Since I will be using type 1 rods and 96mm 22mm pinned pistons, I should not be too far off. Shimming is definitely required, but I will get to that path when I have the parts layed out and mocked.

E

bj · Post by bj » Fri Jun 30, 2006 1:58 pm

dumb question...what makes a 2258?

wish i had the money for that CBI kit of yours....

good luck with the build.

bj

Ephry73 · Post by **Ephry73** » Fri Jun 30, 2006 5:08 pm

228cc=78mm stroke x 96mm bore
a 2270 emgine is 78.4mm strokex96mm bore.

E

Santas Brother · Post by **Santas Brother** » Fri Jun 30, 2006 5:17 pm

http://www.tunacan.net/t4/reference/displace.shtml

Type 4 displacement chart.

Eddie Brown · Post by **Eddie Brown** » Fri Jun 30, 2006 6:26 pm

96*78=2258

Ephry73 · Post by **Ephry73** » Sat Jul 01, 2006 7:04 am

What heads are you going to run with that engine Eddie?

E

Eddie Brown · Post by **Eddie Brown** » Sat Jul 01, 2006 7:16 am

Ephry73 wrote:What heads are you going to run with that engine Eddie?

E

The heads done by Len. On Jake's site its the 7456's. 44*40's.