Turbo System & Motor Build |
Getting All the Parts Click the thumbnails below to view a larger-sized image. |
I bought a 2000 SOHC engine off eBay for a very good price with only 17k miles on it that I was able to pick up locally. After selling off the SOHC parts I didn't need (head, timing cover, valve cover, PCM, exhaust manifold, intake manifold), it ended up reducing the cost even further. The block and crank were mainly what I'd wanted. |
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Since the motor I'd purchased was a SOHC, I had to find a DOHC head. When I told a friend of mine of the project who is a Saturn tech, he was more than happy to donate a used one that he had laying around (thanks!). |
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Since the spare engine I'd purchased was from a SOHC, the timing chain hardware couldn't be reused. Score another great find where someone had purchased all of this stuff and never used it. |
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Another part needed to replace the SOHC counterpart is the timing cover. This one was donated from a fellow Saturn Performance Club member (thanks Jeff P). |
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A DOHC intake manifold will also be necessary. I traded a power steering pump to a fellow Saturn Performance Club member (thanks Deebs) for this one. Photo shows it after it has been sandblasted and cleaned up. |
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I picked up a fuel rail for almost nothing from a local junkyard. It's a plastic one off of one of the newer Saturns that has a returnless system. With no pressure regulator on the rail, it will more easily fit into the cramped space under the intake manifold and be less likely to interfere with the alternator & starter. I'll start out using stock Saturn injectors all around (in the OEM locations on the manifold, and in the new bungs on the underside). I figure that if 4 do alright for up to 170 hp or so, 8 should cover the level of HP I'll end up with. If they do not, I can always upgrade at a later time. |
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A whole bunch of gaskets & seals will be necessary: head, exhaust, intake manifold, valve cover, EGR, oil pan, oil gallery, throttle body, and timing cover. |
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A friend-of-a-friend who is a Saturn rebuilder supplied the lower block stiffening brace that can only be found on later-model DOHC Saturns. This motor needs to be strong and as bulletproof as it can be, and this will do its part. |
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A set of new head bolts were necessary also. They're Fel-Pro part # ES72903 and they fit all DOHC years. Another find where the owner had purchased these and never used them. Since my goals are not outrageous, stock-style bolts and head gasket should be able to handle it. |
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Clevite 77 main, rod, and thrust bearings will be used as a lot of owners have reported that they're quality pieces that hold up. After looking around for the best price, I found it to be from my local Napa store. |
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Plugs with a heat range that was two steps colder were also purchased. Napa stores carry these for a very reasonable price. Anyone on eBay selling these seemed to be charging double or triple what they should have been. NGK plugs that are 2 steps colder have the part # BKR7E-11, and these should be good for any DOHC S-Series. |
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A Hayden part # 205 / LB120AC oil cooler sandwich plate (size 3/4-16) made for 1967-2006 Saab, Toyota, Ford, Volvo will also fit S-Series Saturns. Plus, it's got a built-in thermostat. |
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An oil cooler core was chosen that was a bit smaller than most you'd typically see. The intercooler will take up most of the space in front of the radiator, and I didn't want to add the oil cooler to that and stack 'em three-thick. This will have to go elsewhere, probably in front of a wheelwell. An additional fan will be used with it, along with ducting from a fog lamp opening in the front facia. |
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I found a set of never-used JE forged pistons on eBay. They had a stock bore (perfect since I wanted to use a stock block without boring it), but didn't come with pins or locks as one would expect. Even so, the deal was too good to pass up. |
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Since the JE pistons I bought second-hand didn't come with anything else, the pins, locks, and rings were ordered directly from JE. Even though they came direct, the price wasn't bad. These parts, when combined with the piston cost, were still about half of what the closest web vendor sells it all for. |
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Crower rods were chosen based on the feedback I've heard from other owners who have built motors for forced induction. Compared to stock rods, they are mighty beefy and should be able to handle any boost level that I'll be running. These were purchased from another member on the TSN forums who had bought them but hadn't used them. |
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I began watching eBay and came across this stanless tubular manifold that had some history to it. It was used on the Saturn Motorsports drag car that had 400+ horsepower and been featured in a number of magazines. I had the opportunity to see this car in person at the SPC 2002 Rally (see photos of the car HERE). |