91 LX Motor And DIY Turbo Kit Build
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Old August 16th, 2007, 03:10 PM   #1
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91 LX Motor And DIY Turbo Kit Build


i started this build on 8/10/07. many things took place before this date, such as ordering the shortblock and all of the miscellaneous parts that are going into it. but we actually started putting the motor together and fabricating the turbo kit a few days ago.

enjoy...

the background:

i have the original 302 shortblock with heads, cam, intake. the block has 143,000 miles on it. i put a 62mm turbo on it. then i converted from efi to blow thru carb.

i dyno'd the car at 577 rwhp and then took her to the track and ran a 10.74 @ 125. a little while after that, the motor started oil fouling one of the plugs on the driver's side. i had to replace the plug every other day just to keep the car running decent. i was afraid i had cracked my block.

we took the motor out and took it apart to find the problem. turns out it was just a ring. that's good, but it kinda sucks too. i know i have already pushed this block beyond its capabilities. re-ringing the block and putting it back in was not an option.

the goal:

get a new block and associated parts and build the motor back up. the motor will be a 363ci 9.2:1 dart block. while i am at it, i am going to get rid of my existing 62mm turbo and the turbo kit it came as part of and fabricate my own turbo kit using a new, bigger turbo. i will be re-using my tfs heads and weiand intake.

the parts:

the parts list so far... this is still growing. hehehe
  • milodon 7 qt oil pan
  • milodon oil pickup
  • milodon steel dipstick
  • ARP oil pan bolts
  • standard volume oil pump
  • romac lightweight balancer
  • cammotion custom grind cam (dur: 234/228, lift: 564/560, lcs: 114, cl: 110)
  • motorcraft lifters
  • cloyes timing chain
  • felpro mls head gaskets
  • spec stage 3+ clutch
  • sfi-approved lakewood bellhousing
  • extended clutch fork
  • masterpower 70mm turbo
  • tial 50mm blow off valve
  • tial 60mm wastegate
  • bbk shorty headers
  • two 2.5" v band clamps
  • 3" v band clamp
  • 3.5" flowmaster universal tailpipe kit
  • two 2.5" j bends
  • 2.5" u bend
  • 3.5" u bend
  • t4 flange
  • two flowmaster reducers (from 3" to 2.5")
  • 2.5" stainless flex joint
  • diecast aluminum valve covers
  • modified transmission mount (set motor back 1")
  • oil filter remote mount kit
  • temperature gauge (air intake temp)
  • UPR solid motor mounts
  • 4.125 bore TREperformance race prepped Dart 4 bolt main block
  • TREperformance forged steel 4340 3.4" crankshaft for 363 (balanced with the rest of the assembly to a 28oz imbalance)
  • TREperformance 4340 Forged H beam rods 5.315" for 363
  • Clevite P rod/main bearings
  • Probe SRS 2618-t6 high alloy lightweight forged pistons (-18.8 dished)
  • Speed Pro high performance moly rings
  • ARP head studs
  • 3.5" to 3" and 3" to 2.5" silicone adaptors (for cold side piping)
  • MMR front tubular a-arms
  • MMR front coil over conversion (14" full race kit)
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Old August 16th, 2007, 03:10 PM   #2
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the before:



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Old August 16th, 2007, 03:10 PM   #3
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very nice... but you know what comes next right?
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Old August 16th, 2007, 03:11 PM   #4
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good
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Old August 16th, 2007, 03:11 PM   #5
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the removal:




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Old August 16th, 2007, 03:11 PM   #6
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Old August 16th, 2007, 03:12 PM   #7
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diy turbo kit in a box lol

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Old August 16th, 2007, 03:12 PM   #8
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some progress... got the coilovers and the a-arms installed.







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Old August 16th, 2007, 03:13 PM   #9
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we were going to have a problem with routing the down pipe the way we wanted to ...





i don't think that will be as much of an issue... plenty of room!

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Old August 16th, 2007, 03:13 PM   #10
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john is taking advantage of the delay with the motor...





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Old August 16th, 2007, 03:13 PM   #11
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making progress with the engine bay welding. the towers are mostly welded up, the front panels are welded in. got the firewall still to do and thinking about doing the front strip as well. may do the holes near the top of the fenders when we take the fenders off for painting... thats still a little ways away.

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Old August 16th, 2007, 03:14 PM   #12
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Old August 16th, 2007, 03:15 PM   #13
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progress...





















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Old August 16th, 2007, 03:16 PM   #14
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latest progress...













started the fabrication with mounting the turbo and getting the down pipe done up... in the first pic, the reducer on the left will be what comes off the turbo (3") and goes into a 3.5" down pipe. the one on the right will be used for coming off the passenger side header into the crossover.







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Old August 16th, 2007, 03:17 PM   #15
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turbo mounted with down pipe:





the passenger side header with the reducer. we clipped just a bit off the end of the header to mate the two pipes:





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Old August 16th, 2007, 03:17 PM   #16
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here is the crossover piping (on the bottom) and the down pipe (over the crossover). john routed the down pipe out through the k member and the control arm. before i could snap a pic of it he took all the piping off and ran it up to the welder. we'll get those pipes back this afternoon and i'll get shots of the welded up pipes.








here is the drivers side header routing up to the flange.



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Old August 16th, 2007, 03:19 PM   #17
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thats kinda where we are right now...

we got the downpipe and passenger header back from the welder yesterday and we dropped of the driver header and crossover pipe. we should get those back this afternoon.

i'll get more pix up after we get the pipes back and get them installed.

next is mounting the bov and wg.
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Old August 16th, 2007, 07:26 PM   #18
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wow this is a beautiful thing
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Old August 16th, 2007, 08:28 PM   #19
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sounds like it is comeing along real nicely keep us posted
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Old August 16th, 2007, 08:37 PM   #20
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the big progress report... the hotside is 98% done!!!! we dropped the passenger header and the downpipe off to the welder on wednesday morning and got it back wednesday afternoon. meanwhile, john finished up the drivers header and the crossover pipe and dropped that off for welding. we just got the drivers header and the crossover back tonight. it all bolted back up beautifully!!! lotsa pix coming...

the passenger side header, the down pipe, and part of the crossover all welded up:



the drivers side header and the rest of the crossover. the joint for the header and crossover came out perfect. in this picture i don't think you can see it well, but the crossover pipe has a slip fit on one end and the mount for the wastegate on the other end.



drivers side header mounted:



the drivers side header, the turbo and down pipe, and in the very background the crossover:



the turbo and the crossover joint:



a nice shot from under the turbo:



the passenger header, wastegate mounted, and the down pipe:



the down pipe isn't connected to the exhaust yet, but that's next:





next on the to do list is finishing the down pipe to the exhaust, mounting the blow off, getting the hotside thermo coated, and finally we will order the intercooler. we have decided on an air-to-liquid intercooler. and then we will finish the cold side.

then she'll be ready to crank.
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