Engine Assembly
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Cruiser
Joined: May 2020
Posts: 117
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From: Corrales NM
Engine Assembly
If interested in watching the building of a performance engine I watched a YouTube on a boxer engine.
It's by a company called Subperformance. The name is for Subaru. The guy is building a 2.2 liter 1000 hp motor.
The motor was machined from a billet and the work was precise.
One thing the guy did was when the heads were torqued. His torque wrench had degrees on the readout. The bolts were tightened to a spec, backed off 180 and torqued in precise degrees of 90 then 70, then I think 20 deg
to gradually arrive to the spec.
I've torqued in steps but not measured in degrees.
It would be great to have a shop like his with all the special tools. I did know of a performance builder that did assembly behind glass and a locked door once but mostly not.
My understanding of shovels is specs need to have more tolerance with specs than later motors. That makes them a tad more difficult to work with. Something Donny said.
It's by a company called Subperformance. The name is for Subaru. The guy is building a 2.2 liter 1000 hp motor.
The motor was machined from a billet and the work was precise.
One thing the guy did was when the heads were torqued. His torque wrench had degrees on the readout. The bolts were tightened to a spec, backed off 180 and torqued in precise degrees of 90 then 70, then I think 20 deg
to gradually arrive to the spec.
I've torqued in steps but not measured in degrees.
It would be great to have a shop like his with all the special tools. I did know of a performance builder that did assembly behind glass and a locked door once but mostly not.
My understanding of shovels is specs need to have more tolerance with specs than later motors. That makes them a tad more difficult to work with. Something Donny said.
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Joined: Nov 2006
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From: la la land jerzey
Subaru uses stretchable studs - they in turn walk with The engine temp and metal stretching to keep the works tight at all times in any temp condition
most company’s using that retention idea - you must replace studs as they are a one time use
Harley is a farm tractor from the 1800s - it needs more puddles to splash into
most company’s using that retention idea - you must replace studs as they are a one time use
Harley is a farm tractor from the 1800s - it needs more puddles to splash into
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Joined: May 2008
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From: South Carolina
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Cruiser
Joined: May 2020
Posts: 117
Likes: 44
From: Corrales NM
The guy building this motor replaces the studs with others. He talks about them. A manufacturer makes special for this hot rod.
But that's not what interested me. It's the way he approaches the build. A lot of people here have never done an overhaul or even a tear down. This is worth
watching just for the process. Then there's the tools.
Not much has really changed from what I remember being taught. Just more precision, better tools.
I think the build is in 4 parts.
I did learn a really different way to install wrist pins in pistons in a boxer. The problem is the crank isn't accessible. There's 4 holes in the block that the piston is aligned with and the pins and the
snap rings are put through the holes from the outside.
But that's not what interested me. It's the way he approaches the build. A lot of people here have never done an overhaul or even a tear down. This is worth
watching just for the process. Then there's the tools.
Not much has really changed from what I remember being taught. Just more precision, better tools.
I think the build is in 4 parts.
I did learn a really different way to install wrist pins in pistons in a boxer. The problem is the crank isn't accessible. There's 4 holes in the block that the piston is aligned with and the pins and the
snap rings are put through the holes from the outside.
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