Jump to content
HybridZ
Mikey303LSZ

A big thank you - 240 LS Conversion

Recommended Posts

Wanted to take the time to thank everyone for the inspiration, support and advice many of you provided over the last 4 years during my build.  I never took the time to share - I'm hopeful this provides others inspiration like the Hybrid site has for me. 

 

My goal was to complete the project myself and have a car that's a blast to drive to work, use for long road trips, race and simply remember the good times I had riding in the back of the car as a kid with my Dad and sister.  Also doesn't hurt if it knocks down +26MPG, has cruise control, A/C, comfortable to drive etc.

 

Dad wanted to clean a few things up around his place so he offered me first right of refusal.  It's a '73, he bought it used in '74. I have memories riding around in the back as a kid while my older sister rode up front.  How could I let him sell it?

 

This is the day I picked it up @ his place.

post-25803-0-86648900-1448764818_thumb.jpg

post-25803-0-29773000-1448764842_thumb.jpg

post-25803-0-22535800-1448764858_thumb.jpg

post-25803-0-16340900-1448764887_thumb.jpg

Edited by Mikey303LSZ

Share this post


Link to post
Share on other sites

It sat most of it's life under a carport in Texas and didn't get driven much over the last 5 years or so.  Many hoses were dry rotted in the engine compartment.  I replaced all hoses, rebuilt the carbs, new ignition components, fuel pump etc.. 

post-25803-0-08507200-1448765834_thumb.jpg

post-25803-0-79794700-1448765876_thumb.jpg

post-25803-0-29082300-1448765920_thumb.jpg

post-25803-0-68926600-1448765944_thumb.jpg

post-25803-0-21494100-1448765987_thumb.jpg

post-25803-0-16417900-1448766009_thumb.jpg

post-25803-0-02141600-1448766030_thumb.jpg

post-25803-0-17543500-1448766041_thumb.jpg

Edited by Mikey303LSZ

Share this post


Link to post
Share on other sites

I could spend a lot of time and money messing with this engine/transmission to give it more power.  I started adding up what it would cost to add fuel injection, cam, ported head, perhaps a turbo etc.  At the end of the day it would take a lot of $ to dial in the straight six.  If the car was clean I would have returned it back to original and perhaps restore it.  I started looking at alternatives including something for the garage to keep me off my back during the build. 

 

Found this for $1500 on Craigslist - wife thought I was crazy when I mentioned it.  A few days later she came home, it was installed and I had the Datsun lifted.  She walked under the car and lucky for me thought it was pretty cool...

Edited by Mikey303LSZ

Share this post


Link to post
Share on other sites

I could spend a lot of time and money messing with this engine/transmission to give it more power.  I started adding up what it would cost to add fuel injection, cam, ported head, perhaps a turbo etc.  At the end of the day it would take a lot of $ to dial in the straight six.  If the car was clean I would have returned it back to original and perhaps restore it.  I started looking at alternatives including something for the garage to keep me off my back during the build. 

 

Found this for $1500 on Craigslist.  Wife thought I was crazy but when she came home, it was installed and I had the Datsun lifted.  After she walked under the car she understood and lucky for me thought it was pretty cool...

post-25803-0-69197500-1448767683_thumb.jpg

Edited by Mikey303LSZ

Share this post


Link to post
Share on other sites

I started tearing into the car to sort out how much work it would take on floor boards and clean out the stench - I found the hole in the shifter boot where mice and rat(s) got in.  I found this little guy under the passenger seat.  They had a nest going near the fuel evap. cannister.

post-25803-0-67855000-1448768238_thumb.jpg

post-25803-0-85758200-1448768370_thumb.jpg

post-25803-0-97043000-1448768397_thumb.jpg

post-25803-0-01448400-1448768429_thumb.jpg

post-25803-0-02970200-1448768439_thumb.jpg

Edited by Mikey303LSZ

Share this post


Link to post
Share on other sites

I started looking at engine options - that's when I stumbed on HybridZ.  The LS conversion made a lot of sense to me.  Lightweight, better center of gravity, lots of torque, awesome fuel economy, reliable etc. 

 

At the time, JCI was a popular place to buy an LS kit and he made an A/C mount.  I work long hours, travel at times so I would rather take the Engineering someone else started and tweak from that point. 

 

I debated on a 6 speed vs automatic.  I thought an auto would be better for rush hour traffic, better in the 1/4 mile and if I wanted to drive a 6 speed I could drive the Corvette.  I found an LS1 with an auto from a 2002 Z28 with 50K miles.  I heard it run and was able to get everything I wanted from the car including harness, fans, cruise control etc. 

post-25803-0-27693500-1448769710_thumb.jpg

post-25803-0-33339300-1448769743_thumb.jpg

post-25803-0-17183300-1448769766_thumb.jpg

post-25803-0-51267000-1448769787_thumb.jpg

post-25803-0-24350900-1448769809_thumb.jpg

Edited by Mikey303LSZ

Share this post


Link to post
Share on other sites

Tearing down suspension.  Thank God for pnumatic tools.  The spindle pins were a complete pain in the $%!  I sprayed them with penetrant on and off for 1+ weeks, beat on them with a heavy ball peen, air chisle etc...  I can't begin to explain the feeling I had when they finally broke loose! 

post-25803-0-07320600-1448772007_thumb.jpg

post-25803-0-93690500-1448772062_thumb.jpg

post-25803-0-73219200-1448772112_thumb.jpg

post-25803-0-88148500-1448772165_thumb.jpg

post-25803-0-62396200-1448772209_thumb.jpg

post-25803-0-65363300-1448772249_thumb.jpg

post-25803-0-18250400-1448772290_thumb.jpg

post-25803-0-40455200-1448772317_thumb.jpg

Share this post


Link to post
Share on other sites

My neighbor offered up his glass bead cabinet for my project. I cleaned up one part, then remembered how long it takes to remove heavy rust scale.  Someone on HybridZ turned me onto a local powdercoater.  They blasted and powder painted the parts for something like $250.  Money well spent...  The parts looked great!

post-25803-0-46381200-1448772807_thumb.jpg

post-25803-0-03788500-1448772849_thumb.jpg

post-25803-0-34477700-1448772901_thumb.jpg

post-25803-0-35367000-1448772954_thumb.jpg

post-25803-0-53576200-1448773006_thumb.jpg

Share this post


Link to post
Share on other sites

I'll give more updates and the conclusion in a few days - it's getting late.  Long story short...  I've got 4500 miles on the car now and it's a blast to drive.  It's been on a 1/4 mile track, a local 2.5 mile track, I drive it to work and it's been on a 10 day 4000 mile road trip. 

Share this post


Link to post
Share on other sites

About that time I started fitting the engine into the car.  The JCI mounts worked well.  Spent time beating in floor boards & trans tunnel making room for the 4L60E and dual exhaust.  My goal was to keep the exhaust up tight and allow room to remove the trans. pan for oil & filter changes. 

post-25803-0-48599200-1448944144_thumb.jpg

post-25803-0-70644100-1448944172_thumb.jpg

post-25803-0-50569000-1448944200_thumb.jpg

post-25803-0-60133900-1448944228_thumb.jpg

post-25803-0-08539100-1448944258_thumb.jpg

post-25803-0-21383900-1448944285_thumb.jpg

post-25803-0-32828500-1448944311_thumb.jpg

post-25803-0-78433300-1448944338_thumb.jpg

Share this post


Link to post
Share on other sites

Test fit the JCI headers.  I welded in an extra bung for a wideband and added Flowmaster collector ball flanges.  The ball flanges work GREAT - highly recommended because they add adjustability (extra degrees of freedom), always seal well and require no gaskets. 

 

Even though I used JCI motor mounts and headers the LH mount had to be trimmed to give clearnance to the header - no big deal, 10 extra minutes with a cut-off wheel.

post-25803-0-66170000-1448944867_thumb.jpg

post-25803-0-17215700-1448944900_thumb.jpg

post-25803-0-96181600-1448944933_thumb.jpg

Share this post


Link to post
Share on other sites

Soon I started with rust repair.  Goal was to clean up underside of vehicle to where I wouldn't need to remove the interior or suspension again if I decided to repair/paint the body.  Thought about welding in whole floor boards but after additional review settled in on spot repairs since the floors weren't that bad.  The pnumatic scale remover and cup brush were my friend for several hours (perhaps days).  Thanks SunnyZ for the tip on the cup brush.

post-25803-0-56692900-1448945795_thumb.jpg

post-25803-0-47940800-1448945840_thumb.jpg

post-25803-0-14068800-1448945886_thumb.jpg

post-25803-0-31197500-1448945935_thumb.jpg

post-25803-0-45564000-1448945972_thumb.jpg

post-25803-0-05010800-1448946011_thumb.jpg

post-25803-0-40373100-1448946024_thumb.jpg

post-25803-0-89296000-1448946040_thumb.jpg

post-25803-0-91099200-1448946058_thumb.jpg

post-25803-0-67744200-1448946087_thumb.jpg

Share this post


Link to post
Share on other sites

The JCI trans mount would have worked well with a 6 speed in terms of exhaust clearance.  I didn't like the clearance with the auto trans so I broke out the MIG and added a "bat wing" modificaiton to the JCI unit.  Not pretty but effective and solid.   

post-25803-0-70835500-1449026284_thumb.jpg

post-25803-0-14560600-1449026314_thumb.jpg

post-25803-0-69205800-1449026343_thumb.jpg

post-25803-0-00572500-1449026382_thumb.jpg

post-25803-0-24215700-1449026400_thumb.jpg

post-25803-0-01781500-1449026433_thumb.jpg

Edited by Mikey303LSZ

Share this post


Link to post
Share on other sites

Did some research on sectioning struts.  Came close to doing my own and then took the easy way out for time sake.  Looked at different brake options.  I liked the Silvermine setup because of price, the use of OEM parts, the parking brake feature (which works great and worked with the OEM P. brake cables).  Installed new bearings, races, seals.

post-25803-0-84309300-1449027615_thumb.jpg

post-25803-0-70960500-1449027679_thumb.jpg

post-25803-0-75411000-1449027739_thumb.jpg

post-25803-0-45861200-1449027797_thumb.jpg

post-25803-0-46430800-1449027852_thumb.jpg

post-25803-0-11401800-1449027915_thumb.jpg

post-25803-0-44693300-1449027980_thumb.jpg

post-25803-0-01020100-1449028019_thumb.jpg

post-25803-0-54987700-1449028062_thumb.jpg

Share this post


Link to post
Share on other sites

Cobbled up an exhaust system using old pieces of C6 Corvette exhaust, a few 3" mandrel bends and a heavily modified y-pipe.  It's not pretty but it was cheap, works well, sits nice and tight and doesn't leak. 

 

After a 9 day 4000 mile road trip on the Hot Rod PowerTour I've decided it's a little too loud - this winter I'll tweak the exhaust to eliminate some of the drone.

post-25803-0-33319200-1449031088_thumb.jpg

post-25803-0-65530100-1449031150_thumb.jpg

post-25803-0-73701700-1449031216_thumb.jpg

post-25803-0-92512000-1449031274_thumb.jpg

post-25803-0-06642200-1449031333_thumb.jpg

post-25803-0-40892600-1449031392_thumb.jpg

post-25803-0-22697100-1449031418_thumb.jpg

post-25803-0-65303500-1449031454_thumb.jpg

post-25803-0-08556100-1449031526_thumb.jpg

post-25803-0-84926600-1449031585_thumb.jpg

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×