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Simple IS300 LS1 Swap

Old 05-11-2016, 03:17 AM
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Default Simple IS300 LS1 Swap

I'm using this thread to document my progress on this project.

Background: I'm more interested in performance driving than looking cool so I tend to mod my cars more towards function over fashion. Living on the island of Oahu in Hawaii, we don't have a track (shut down around 10 years ago) so autocross with the SCCA is my only performance driving outlet. My other car, a Honda S2000, was purchased due to my heavy interest in autocross. Due to the class I'm interested in and due to how good the car is out of the box, the major tuning I did is limited to suspension, bolt ons, and ecu flash.

20140427_XE220654 by satoman44, on Flickr

I was driving that car for almost 5 years when I started looking for a second car. My requirements were 4 doors, rear wheel drive, lightweight, and preferably with a v8. Unfortunately, there are no cars that seem to fit my requirements so I started at looking at LS swaps. I was looking at IS300's and G35 sedans as possible candidates. I settled on the IS300 due to the fact that it was smaller, lighter, and better built. They also feel much lighter when driving them. So after looking for 9 months, I finally found a 2004 auto sport design w/ LSD which I purchased in August 2015. It was in really bad shape so I got it for a nice price.

Untitled by satoman44, on Flickr

With any of my cars, my "stage 0" is always wheels/coilovers/audio/gauge cluster color change. So within a couple months, it looked like this.

20160415__DSC4366 by satoman44, on Flickr

The following posts will be documenting my LS swap adventure.

You will notice I don't have the skills that most who do conversions have. I don't own or have the skills to fabricate parts. I rely on the swap parts available to me. That said, I'm still learning as I go and haven't even pulled a motor before this project!

Current Swap Parts List:

Swap kit from Dedicated Motorsports includes the following:
-Engine Mounts
-Trans Mount
-Clutch Master
-Clutch Line
-Modified GTO front sump pan with pickup
-1-3/4" Headers (driver side has steering column running between the runners)
-Radiator Hoses
-Wire Harness
-Throttle Cable

Bone stock 98 LS1 pulled from automatic Camaro
T56 Magnum
4th Gen Fbody Bellhousing
RPS Carbon Twin modified by Tony Mamo
Monster LT1-S (need to sell after deciding to get the RPS)
Fluidampr underdrive pulley
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Old 05-11-2016, 03:18 AM
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Pulling the stock drivetrain with help from my friend.

20160423_IMG_2214 by satoman44, on Flickr

20160423_IMG_2219 by satoman44, on Flickr

20160423_IMG_2231 by satoman44, on Flickr

20160423_IMG_2251 by satoman44, on Flickr

20160423_IMG_2272 by satoman44, on Flickr

20160423_IMG_2276 by satoman44, on Flickr

20160423_IMG_2277 by satoman44, on Flickr
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Old 05-11-2016, 03:25 AM
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Starting the maintenance on the LS1. I replaced rear cover gasket, rear crank seal, front timing cover gasket, timing chain, oil pump, and water pump gaskets (water pump looks pretty new). The modified GTO pan came with new gasket and the front sump pickup.

Stock 98 LS1
20160429_IMG_2296 by satoman44, on Flickr

Lift cover
20160430_IMG_2335 by satoman44, on Flickr

Old oil pickup
20160430_IMG_2337 by satoman44, on Flickr

New pickup
20160430_IMG_2346 by satoman44, on Flickr

Notched GTO pan
20160430_IMG_2353 by satoman44, on Flickr

20160430_IMG_2354 by satoman44, on Flickr

20160430_IMG_2362 by satoman44, on Flickr

Rear cover off
20160430_IMG_2363 by satoman44, on Flickr

Rear cover on with new gasket and rear crank seal
20160501_IMG_2369 by satoman44, on Flickr
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Old 05-11-2016, 03:30 AM
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Pulling stock balancer pulley
20160503_IMG_2373 by satoman44, on Flickr

Timing cover removed
20160507_IMG_2386 by satoman44, on Flickr

20160507_IMG_2393 by satoman44, on Flickr

Comparison between stock balancer and underdrive Fluidampr
20160507_IMG_2396 by satoman44, on Flickr

Timing gear and oil pump removed
20160507_IMG_2404 by satoman44, on Flickr

Comparison between stock and updated timing chain
20160507_IMG_2406 by satoman44, on Flickr

New timing chain and oil pump installed
20160507_IMG_2408 by satoman44, on Flickr

Timing cover reinstalled with new gasket and crank seal
20160507_IMG_2415 by satoman44, on Flickr

New perimeter valve cover gaskets installed
20160507_IMG_2418 by satoman44, on Flickr

20160507_IMG_2421 by satoman44, on Flickr
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Old 05-11-2016, 03:37 AM
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4th Gen Fbody Bellhousing
20160508_IMG_2426 by satoman44, on Flickr

Wide ratio T56 Magnum. This is going to be a daily driver.
20160508_IMG_2428 by satoman44, on Flickr

20160508_IMG_2439 by satoman44, on Flickr

Engine and trans mated without clutch installed for test fitting. I have a Monster LT1-S but didn't realize it was so heavy until I received it. I now have a RPS Carbon Twin lightened by Tony Mamo on the way. Anyone who wants the Monster, please PM me, I don't have enough posts to post in the marketplace.
20160508_IMG_2453 by satoman44, on Flickr

Get in there! Not bad considering I'm doing this myself without an extra set of hands.
20160508_IMG_2458 by satoman44, on Flickr

Test fit successful
20160508_IMG_2462 by satoman44, on Flickr

Console area needs more trimming. I already notched out about 4". I'll probably need a 4" rear offset shifter.
20160510_IMG_2464 by satoman44, on Flickr
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Old 05-11-2016, 07:24 AM
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Very nice. Well thought out and documented build. Motor mount pics ??
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Old 05-11-2016, 07:55 AM
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nice start to what will be a fun car... doing things like this in flip flops is very brave lol.
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Old 05-11-2016, 02:47 PM
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Originally Posted by aknovaman View Post
Very nice. Well thought out and documented build. Motor mount pics ??
I'll have to remember to get pics of my actual mounts, but here's what they look like:
https://www.dedicatedmotorsports.com/product-p/lsmk.htm


Originally Posted by Nali6.2 View Post
nice start to what will be a fun car... doing things like this in flip flops is very brave lol.
In Hawaii, it's common place to wear them all the time. You can tell I'm a noob lol. I'm just not used to wearing them since I'm usually just doing small mods to the car. You can see my friend in the pics who is actually wearing his work shoes since he's an auto tech.
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Old 05-11-2016, 10:54 PM
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nice work
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Old 05-12-2016, 12:10 AM
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congrats and welcome to the LSX IS300 club. i just got mine running a couple weeks ago. just waiting for my buddy to have some time to finish my intake, exhaust and ABS delete.


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Old 05-12-2016, 03:48 AM
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Originally Posted by Swapper View Post
congrats and welcome to the LSX IS300 club. i just got mine running a couple weeks ago. just waiting for my buddy to have some time to finish my intake, exhaust and ABS delete.


Thanks, looks like yours is more than stock lol. May I ask how you did your AC? Also, any issues you ran into that I should look out for?
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Old 05-12-2016, 07:36 AM
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[/QUOTE] In Hawaii, it's common place to wear them all the time. You can tell I'm a noob lol. I'm just not used to wearing them since I'm usually just doing small mods to the car. You can see my friend in the pics who is actually wearing his work shoes since he's an auto tech.[/QUOTE]

lol I get it ive walked into my garage before with them on.. it only took 1 time for something to happen before I wore shoes every time lol
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Old 05-12-2016, 09:13 AM
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nah its cool the roadkill guys do it all the time!
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Old 05-12-2016, 03:14 PM
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i didnt put a/c on it. only issue im having so far is trying to make the factory coolant temp gauge work. i dont have the factory ecu in anymore. besides that its pretty straight forward.

mine is an auto though.
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Old 05-30-2016, 05:18 PM
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Not much of an update, but I've been working on it every Saturday taking care of odds n ends and waiting on parts.

Decided to do more trimming around the shifter
20160521_IMG_2573 by satoman44, on Flickr

Measuring up for driveshaft which needs to be shortened along with a new slip yoke and u-joint.
20160521_IMG_2576 by satoman44, on Flickr

Steering column removed
20160521_IMG_2581 by satoman44, on Flickr

Dedicated Motorsport IS300 swap headers test fit
20160521_IMG_2582 by satoman44, on Flickr

The space between driver side runners which the steering shaft goes through
20160521_IMG_2583 by satoman44, on Flickr

Decided on this Tony Mamo modified RPS Billet Carbon Twin after realizing the Monster LT1-S was over 50 lbs. This RPS is 30.4 lbs, should make the engine feel almost as peppy as my S2000's F22 (hopefully).
20160527_IMG_2611 by satoman44, on Flickr

Clutch cover removed
20160527_IMG_2613 by satoman44, on Flickr

Detail
20160527_IMG_2620 by satoman44, on Flickr

More detail
20160527_IMG_2622 by satoman44, on Flickr

Flywheel with carbon friction inserts
20160527_IMG_2635 by satoman44, on Flickr

Pilot bearing installed. Luckily for me, the LS1 was an auto so there was no existing pilot bearing to remove.
20160528_IMG_2640 by satoman44, on Flickr

Deburring transmission input shaft and clutch rotor per RPS installation instructions
20160528_IMG_2642 by satoman44, on Flickr

Flywheel installed, what a shame this will be never be seen once trans goes back on lol
20160528_IMG_2643 by satoman44, on Flickr

Upon measuring clearances between pressure plate and throwout bearing, I found my slave was damaged. Thus, this is where my progress has stopped for now.
20160528_IMG_2646 by satoman44, on Flickr
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Old 05-31-2016, 01:39 PM
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just curious as to why you pulled the steering column?

also you might wanna pull the slip yoke out about 1/2 an inch and get the measurement for the driveshaft. gives some wiggle room for drivetrain movement.
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Old 05-31-2016, 02:54 PM
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Originally Posted by Swapper View Post
just curious as to why you pulled the steering column?

also you might wanna pull the slip yoke out about 1/2 an inch and get the measurement for the driveshaft. gives some wiggle room for drivetrain movement.
Pulled the steering column since the shaft goes through the driver side header and just for more room under the dash while I install my manual brake and clutch pedals.

Is 1/2" the standard amount of slack to give the slip yoke? I just bottomed out for the measurement. I was planning to adjust for some slack in the slip yoke but not quite sure what to make it.
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Old 06-01-2016, 12:09 AM
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ah ok.

yeah i usually give half inch to an inch of play on the slip yoke.
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Old 06-02-2016, 11:13 AM
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nice work! subscribed! Sandals in the garage are the best!
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Old 06-02-2016, 11:26 AM
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Nice work. Did you use a cover alignment tool when you installed the front cover? That keeps the cover clearanced for the crank.
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