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New Engine

Moderator: Mod Squad

Georgia200
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Posts: 148
Joined: Sun Oct 21, 2018 3:38 pm

New Engine

Post #1 by Georgia200 » Thu Sep 05, 2019 9:01 pm

Surfing CL I found a rebuilt 250 shortblock, zero miles, the price was right so I brought it home. The PO went with a V8 instead.

It has 6.5cc pistons 030 over, stock cam, early timing chain.

I have two C9 heads that are in good shape, never been decked.

Its going in my 67 with a C4 and 2.80 rear end.

This will be a winter project, Im in the middle of a PS install on my 65 and its slow going.

Im going to disassemble the shortblock, check the bearings, rings and reassemble.

I want to start collecting parts, but first I need to decide what my goal is. Easiest is to put together a stock engine and be happy with the 50 extra cubes. Next up is tri-power, although I dont know if it will fit under the hood. I have a couple good 2100s, that would be choice 3, and last, turbo or SC. I know zero about forced induction, so I would need a reference book and a lot of assistance to go that route.

My current thoughts are a better cam, flat tops, 2V conversion and a single 2 1/4 exhaust.

I dont want to go overboard on cost, so used parts to the front of the line. In the end I will probably keep the 65 and sell the 67 or trade it for an F100, or gift it to my SIL. The misses likes the 65 and I dont really have room for both, Im paying $90 a month to store the 67.

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chad
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Joined: Sat Oct 24, 2009 9:51 am
Location: Lawrence Swamp, S. Amherst, MA

New 2 me fresh Engine

Post #2 by chad » Thu Sep 05, 2019 10:23 pm

on the quick once over: I like the cam upgrade (U will B inthere to ck the truth of the seller anyway), suggest a direct mount of that 2v if U can. don't know Y the effort/expense of new pistons, but read pretty quickly. early timing sets R good, so is C9 head (Y the 'direct mount suggestion)
Will hafta go back, reread for more (detail, and to offer U anything). Do not "deck a head" (or a 250 block) if U can avoid those.
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

Georgia200
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Posts: 148
Joined: Sun Oct 21, 2018 3:38 pm

Re: New Engine

Post #3 by Georgia200 » Fri Sep 06, 2019 8:00 am

A set of flat tops off ebay runs under $100 + the cost of pressing on the rods.
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drag-200stang
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Posts: 1109
Joined: Sun Oct 19, 2003 6:10 pm
Location: Michigan

Re: New Engine

Post #4 by drag-200stang » Tue Sep 10, 2019 9:32 am

For about 180 or less you can use the 2.5L hsc rod that are longer and fix the 250 short rod problem and keep your piston... Do the math to see if it will work for you.
66 Mustang Coupe
200 turbo w/lenco 4-spd
stock adj. rockers, stock timing set, ARP studs
best 1/4 mile ET 9.85/best mph 139 on 8 lbs progressing to 15 lbs boost
Went 9's when 10's was fast.

Georgia200
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Posts: 148
Joined: Sun Oct 21, 2018 3:38 pm

Re: New Engine

Post #5 by Georgia200 » Tue Sep 10, 2019 5:26 pm

The HSC rod will work, if they can be found.

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chad
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Joined: Sat Oct 24, 2009 9:51 am
Location: Lawrence Swamp, S. Amherst, MA

New to me Engine

Post #6 by chad » Tue Sep 10, 2019 6:00 pm

george _ its a tempo or touris '86 thru '91 4 cyl engine.
there's plwnty aftr mrkt for them, we use'em all the time here
Do U have "the Handbook", or visited the above tech archive?
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

Georgia200
Registered User
Posts: 148
Joined: Sun Oct 21, 2018 3:38 pm

Re: New Engine

Post #7 by Georgia200 » Wed Sep 11, 2019 3:44 pm

Did some measuring today.

Pistons are .113 down in the hole. With a 6.5cc dish, 53cc head, that gives me right at 9:1 compression.

Im guessing the builder did his math.

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