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LC Front End Rebuild and engine Cam change


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#1 _LS2 Hatch_

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Posted 28 May 2019 - 10:27 PM

Hi Guys and Gals,
It’s been years since I have been on this site, but I thought I would have a look for the sake of it. I found the site still had members helping other members. Not the smart arse keyboard worrier responses you see on Facebook. I was pleasantly surprised and happy to see this.
So, given I have just started work on my LC, thought I would post a thread for those interested.


I have a 1970 LC GTR. It drives and feels great. I happened to have it up on my hoist and noticed the outrigger bushes had all but disappeared. The only think holding it in place was the sway bar. On further inspection I found every other blue Superpro style bush had also given up. There is a mix of rubber and blue bushes throughout the front end. So, I began the task of undoing the front end and dropped out the complete front end with motor and box still in tact. Was actually easier and quicker to do than I expected. Photos below of the first steps.

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#2 _LS2 Hatch_

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Posted 28 May 2019 - 10:35 PM

I have purchased all new bushes, ball joints and tie rod ends. Some may not need replacing, but if I’m going to do it, may as well do the whole thing. I don’t intend on doing it again anytime soon.
I bought the bushes from Shop that had a big sale on last weekend. I paid over the phone and had a mate pick them up for me as he was going anyway, and saved me a trip to the other side of town. I will get them from him in the next day or two. So in the interim, I started to remove the motor, well parts of it. I have never been happy with the idle of the engine. It needs more attitude. Also I always thought the e gone bay needed a tidy up. The car looks awesome but to me the engine bay let it down. This is now a perfect opportunity to do it all. Issue is I know nothing of the engine. I started with a compression test and was happy with the result.Attached File  81CEE5CC-D110-4AD3-AF3A-B833E1785A32.jpeg   99.95K   3 downloads

This is the same across all 6 cylinders. O

#3 _LS2 Hatch_

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Posted 28 May 2019 - 10:38 PM

Best step pull it down and see what the head has had done to it.Attached File  074C0911-E3D4-40AD-90B5-F42B4DE94F5F.jpeg   105.19K   3 downloadsAttached File  0419BAE9-02A9-433F-83C6-3FD561A89965.jpeg   135.37K   5 downloadsAttached File  BEF72907-A62C-450F-9150-68C499D7FC1B.jpeg   77.77K   3 downloads

Again, happy with my findings.


More tomorrow

#4 koalasprint

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Posted 29 May 2019 - 01:14 PM

Hi Grant. are you the same LS2 hatch from here? http://ls2lxhatch.com/index.htm

If so your site has helped me heaps.

 

Regards, Steve.



#5 _LS2 Hatch_

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Posted 30 May 2019 - 08:09 AM

Steve, I wish it was me as that site is. Try helpful. Unfortunately it’s not me.
That guy is on this site and his threads were a help to me when I built my Hatch too

#6 _LS2 Hatch_

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Posted 15 June 2019 - 08:37 AM

Update.
Took my head and cam to HSD in Melbourne. He looked over the head and told me I had a really good base for a strong quick engine. Just some components weren’t best suited to each other. His thoughts were wrong valve springs for the cam. Was confident it was getting coil bound. Also suggested different rockers. Wanted to keep them on a common shaft rather than individual. Add to that new push rods, a valve grind, little bit more porting, new Cam and timing gears, and now we have a scope of works and parts list that’s a bit more than I had hoped for.
Oh well, only money right??🤣🤣

#7 _LS2 Hatch_

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Posted 15 June 2019 - 08:44 AM

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#8 _LS2 Hatch_

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Posted 15 June 2019 - 09:01 AM

Next step was to strip and paint the front end.Attached File  948B4A1B-AD58-4AC8-BD53-C592837701E9.jpeg   114.98K   1 downloadsAttached File  C4DF4FE6-94F7-4664-BF1C-5AAA88C19A84.jpeg   124.28K   1 downloadsAttached File  49AE7837-96E3-4BBF-9DC2-656AAA3E940A.jpeg   122.14K   1 downloads

#9 _LS2 Hatch_

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Posted 15 June 2019 - 09:13 AM

The front end then needed to be put back together. I am only part way through at the moment, but I have ready many comments that this needs to be done partially back in the car. Well, I disagree.
Here is my reassembly.

First step carpet pads on the table and hang the lower control arm off the edge to insert the spring Attached File  21CC82D9-2CBA-4EE0-82BE-B04F0CC91E09.jpeg   117.05K   1 downloads

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Then put the spring in place and bring back onto the bench safely and stable
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#10 _LS2 Hatch_

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Posted 15 June 2019 - 09:21 AM

Next put stub axle on to the upper arm and put the nut on as far as you can with your fingers. Need to make sure it is almost a full but so when the spring pulls on it later it won’t strip it off if not enough threads

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You can see I have a ratchet strap over the tp of the front end and around the table. It is connect back on its self so it can’t slip when under pressure.


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Then strap it down nice and tight until the stub axle lands nicely on the bottom ball joint. Pull down as Farr as possible so the nut can get as many threads as possible so it can’t pull off when the strap is released.

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#11 _LS2 Hatch_

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Posted 15 June 2019 - 09:48 AM

Release the strap and tighten the nuts properly and insert split pins.
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Attach brake calliper and this is where I’m up to now

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#12 GMH-01X

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Posted 16 June 2019 - 05:03 PM

Looks good Grant, did you use KBS on the k frame




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