blu04DD wrote:will an LSJ mate up to the F23/clutch/flywheel from an L61?
Also does the starter and all the other little parts bolt into the same locations? (this would include the motor mounts)
Theres a complete LSJ motor (minus the oil pan) with low mileage. Might be worth to do a full swap and figure out the crank sensor and all the little stuff.
thoughts?
oh and would the return fuel system be the same, as in bolt right up too? fuel rail...etc. I actually have an LSJ fuel rail from the s/c kit I bought last year and never sold it
I've covered this in multiple threads over the years, but I can't even find them to link, and without sucking off a mod information never gets stickied here, so I'll recap for you:
L61 and LE5 clutch/ flywheels will interchange no problem. Use the F23 no problem.
LSJ and LNF clutch/ flywheels will interchange no problem.
to use the LSJ with the F23 in the jbody, you need an LSJ clutch and flywheel. you cannot mix/match the clutch/flywheel assemblies.
the flywheel needs to match the crank, and the clutch has to match the flywheel. no hybrid combinations for these parts.
L61 and LE5 have 6 bolt crankshafts... meaning the flywheel is attached with 6 bolts.
LSJ and LNF have 8 bolt crankshafts
also, you will need a transmission spacer for use of the LSJ on the F23. the pressure plate is a bit bigger, so the trans needs to be spaced about 1/8" to clear.
It's a $30 part from GM brand new, pm me if you want the part number.
the ecotec engines in family II are the same architecture, so almost all of the accessories bolt on the same way in the same place (Alternator, Starter, etc)
fuel rails interchange freely, however direct injected models have different head castings so be careful here.
you will need an L61 oil pan no matter what ecotec you choose for the mounting boss for the lower dogbone.
power steering depends on if you stay purebred ecotec and which ecotec
if you hybrid with the L61, this is a non-issue.
if you purebred LSJ swap, the jbody ecotec pump bolts in the normal place.
if you purebred LE5 swap, there is no cam-drive provisions, so you will have to mount a pump some other way. (a few shops sell adapters to use PS pumps in the old a/c location)
other odds and ends
LSJ swap:
L61 thermostat housing NEEDS to be used in order to clear the shifter bracket on the F23
LSJ oil cooler is in the way of the L61 thermostat housing (you can chop the thermo housing and make a ghetto lower rad hose to get around this, or buy an adapter that replaces the LSJ oil cooler and lets you run external lines to a remote mounted cooler. PM me for details)
LSJ gives you an extra coolant temp sensor by the upper rad hose
LSJ has a cam-drive boss on the exhaust cam that needs to be covered with a block off plate. A gasket needs to be made because this will leak oil if there's no gasket.
LSJ has different PCV setup. if you plan on using a plastic manifold, the head and the manifold need to be modified in order to work. Saab 9-3 turbo manifold is a direct swap with no mods, but the manifold is kind of crappy flow-wise.
LSJ alternator spins backwards. use an L61 alternator if you're not using the LSJ supercharger.
LE5 swap:
L61 thermostat housing NEEDS to be used in order to clear the F23 shifter bracket
some LE5s had oil coolers, some didn't. if it doesn't have one, then you're in the clear, if it does, then you will have the same issues as the LSJ oil cooler, and will need to do something in order to clear it.
VVT is an issue. need the native E67 PCM to run this in purebred form.
the other big hurdle is the crank trigger ring. all the newer ecotecs have a 60-2 pattern (58x) vs the L61's 6+1 (7x)
they will NOT run on jbody electronics without an external crank trigger that is timed properly
if you run an LE5 with a non-vvt head, then you'll need a trigger
LSJ purebred or hybrid you'll need a trigger
LE5 purebred will only run on E67 PCM, so yea... trigger not necessary here, you need to have the native PCM
every external trigger setup has been slightly different so far, so depending on how you mount your sensor, the timing of the ring is relative.
any other questions just shoot me a PM, it's way easier for me to keep track then chasing you thru multiple threads lol