What does it really cost to rebuild the block?
05-12-2009, 06:41 PM
#1
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What does it really cost to rebuild the block?
Hurts to ask, but, I'd love to hear from those who've done it (I know there's a ton here).
I bought a 1.6 with built head, and it burns oil. Some 1qt per 1k mi.
Yep. Lots. Builder says the shop checked the cylinders, found them to be fine, and he then slapped stock pistons with 1mm larger rings.
Everyone I showed the car to (SpecMiata builder, engine builder) tells me it's the rings. SpecMiata guy ran the leakdown, and confirmed it.
So, I've got a built head with a lousy block, and a custom turbo (built upon GReddy), and I'm afraid that if I install the turbo, I'll **** oil.
Question is, what does it really cost to rebuild the block?
MazdaSpeed doesn't sell just the block, or else I'd be on it like stink on ****.
So, my choices are:
either get a crate from MS, and swap heads (the one I have is ported, polished, enlarged intake & exhaust, lowered compression, & bunch of other things that I can't remember)
find a used block, rebuild it (and, according to my SpecMiata builder, MS (he only deals with Mazda) doesn't make reasonably priced larger pistons, if it comes to having to bore it out).
So, what is the least expensive? Buy a crate motor, or rebuild (bore, rings, pistons, enchilada).
Btw, if I sound like a tool, that's because when it comes to engine internals, I've never done anything more than a timing belt or VCG.
I bought a 1.6 with built head, and it burns oil. Some 1qt per 1k mi.
Yep. Lots. Builder says the shop checked the cylinders, found them to be fine, and he then slapped stock pistons with 1mm larger rings.
Everyone I showed the car to (SpecMiata builder, engine builder) tells me it's the rings. SpecMiata guy ran the leakdown, and confirmed it.
So, I've got a built head with a lousy block, and a custom turbo (built upon GReddy), and I'm afraid that if I install the turbo, I'll **** oil.
Question is, what does it really cost to rebuild the block?
MazdaSpeed doesn't sell just the block, or else I'd be on it like stink on ****.
So, my choices are:
either get a crate from MS, and swap heads (the one I have is ported, polished, enlarged intake & exhaust, lowered compression, & bunch of other things that I can't remember)
find a used block, rebuild it (and, according to my SpecMiata builder, MS (he only deals with Mazda) doesn't make reasonably priced larger pistons, if it comes to having to bore it out).
So, what is the least expensive? Buy a crate motor, or rebuild (bore, rings, pistons, enchilada).
Btw, if I sound like a tool, that's because when it comes to engine internals, I've never done anything more than a timing belt or VCG.
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05-12-2009, 11:54 PM
#3
pistons - 550ish
rods - 400ish
bearings - $50ish ebay acl special
machine work - 250+
cometic hg - 100
gasket set - 125ish or something
assembly - free if you can do it yourself, 250+ otherwise
other **** im forgetting - $100+
so like $1.5k with parts and **** to do it right. The machine work and assembly with be your biggest variable.
rods - 400ish
bearings - $50ish ebay acl special
machine work - 250+
cometic hg - 100
gasket set - 125ish or something
assembly - free if you can do it yourself, 250+ otherwise
other **** im forgetting - $100+
so like $1.5k with parts and **** to do it right. The machine work and assembly with be your biggest variable.
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05-13-2009, 02:56 AM
#4
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Pistons and rods - $825
Timing belt, water pump, head gasket, other gaskets - $200
Thrust and main bearings - $100
Machine work - $100 to $250 for an .040 bore and hone. Shop around.
Assembly - free to $200
I got discounts on a few things, deals on a few things, and I am hoping to bring the end total in just a hair under $1200.
Timing belt, water pump, head gasket, other gaskets - $200
Thrust and main bearings - $100
Machine work - $100 to $250 for an .040 bore and hone. Shop around.
Assembly - free to $200
I got discounts on a few things, deals on a few things, and I am hoping to bring the end total in just a hair under $1200.
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05-13-2009, 08:47 AM
#7
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So, seems like getting a short block from Mazda (there's a discussion on Spec forum) would be almost cheaper, that is, if MS sells a short block.
Thanks very much for the replies, guys.
Thanks very much for the replies, guys.
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05-13-2009, 08:50 AM
#8
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Oil gets burned in the cylinders, and goes right out the friggin' tailpipe.
The biggest load about my car is that while the compression numbers are good, the leakdown #'s are for ****.
And, it seems like I'm not the only one...
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05-13-2009, 09:56 AM
#9
Nobody mentioned replacing the oil pump.
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05-13-2009, 10:50 AM
#13
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05-13-2009, 11:03 AM
#14
My engine build
Complete engine gasket set: $135.34
Eagle connecting rods: $350.53
Wiseco pistons: $468.73
ARP main studs: $106.95
ARP head studs: $133.92
Cometic head gasket: $99.65
Water pump + timing belt kit: $70.00
Oil pump: $65.00
Bearings: $ 100.00
Machine shop labor: $200.00
Assembly labor: $300.00
Total: $2030.12
My true cost was a few hundred more because I needed a new crank shaft a replacement head and because of a few dumb decisions I made. Also be sure to have a couple hundred extra for other things that may come up.
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Complete engine gasket set: $135.34
Eagle connecting rods: $350.53
Wiseco pistons: $468.73
ARP main studs: $106.95
ARP head studs: $133.92
Cometic head gasket: $99.65
Water pump + timing belt kit: $70.00
Oil pump: $65.00
Bearings: $ 100.00
Machine shop labor: $200.00
Assembly labor: $300.00
Total: $2030.12
My true cost was a few hundred more because I needed a new crank shaft a replacement head and because of a few dumb decisions I made. Also be sure to have a couple hundred extra for other things that may come up.
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05-13-2009, 11:56 AM
#17
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05-13-2009, 08:29 PM
#19
My engine build
Complete engine gasket set: $135.34
Eagle connecting rods: $350.53
Wiseco pistons: $468.73
ARP main studs: $106.95
ARP head studs: $133.92
Cometic head gasket: $99.65
Water pump + timing belt kit: $70.00
Oil pump: $65.00
Bearings: $ 100.00
Machine shop labor: $200.00
Assembly labor: $300.00
Total: $2030.12
My true cost was a few hundred more because I needed a new crank shaft a replacement head and because of a few dumb decisions I made. Also be sure to have a couple hundred extra for other things that may come up.
Complete engine gasket set: $135.34
Eagle connecting rods: $350.53
Wiseco pistons: $468.73
ARP main studs: $106.95
ARP head studs: $133.92
Cometic head gasket: $99.65
Water pump + timing belt kit: $70.00
Oil pump: $65.00
Bearings: $ 100.00
Machine shop labor: $200.00
Assembly labor: $300.00
Total: $2030.12
My true cost was a few hundred more because I needed a new crank shaft a replacement head and because of a few dumb decisions I made. Also be sure to have a couple hundred extra for other things that may come up.
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