Jump to content
d.p

My 1971 521

Recommended Posts

6 hours ago, d.p said:

Mainer no fitment issues with yours either right? 

 

Nope, it fit awesome. 

  • Like 1

Share this post


Link to post

The larger diameter 50 amp alternator from a car is very close to hitting the grease nipple on the idler arm just below it.

  • Like 1

Share this post


Link to post

Then you are more than good.

 

The 620 is almost identical to the 521 and will 'rub' when the engine torques over. I had to re-position the rad hose, replace the lower rad hose inlet with a zx one, use a 720 engine mount to lift the alternator.... all a lot of bother.

  • Like 1

Share this post


Link to post

I must have had the right combination of "stuff" then, because mine bolted right in. Only thing that changed was a shorter belt. 

  • Like 1

Share this post


Link to post
3 minutes ago, mainer311 said:

I must have had the right combination of "stuff" then, because mine bolted right in. Only thing that changed was a shorter belt. 

Same here....

  • Like 1

Share this post


Link to post

I went with the Power select brand NEW alternator from Rockauto(partsgeek sells the same one also I believe.

I have had good luck so far in 2 yrs of daily driving. However it got expensive now 88$ I got 2 at 66 apc.

 It is made in China but hasnt failed like the others from Autozone or O Rileys.  I think its worth it so far.

I ran a 50 amper with a lower 510 mount and just had issues all the time of it going loose. plus I have a turnbuckle adjustment so putting a 50 limited my movement and then would hit the idler arm.I went back to the 35 and everything seems fine even with H4 lamps installed.

 

also my starter seems to last longer also after I put a HOT start relay in. I usualyy would kill a starter with in 2 yrs but havent since installed. I got a TSI Automotive Gear Reduction Starter waiting go in but this one hasnt broken yet. Bet most people think the selinoid id going out but really low voltage at the key switch(loss)

  • Like 1

Share this post


Link to post

Maybe the pulley was smaller diameter. On my 620 if you went too small a belt the alternator hit the block.

  • Like 1

Share this post


Link to post

I will find out soon if it fits, just waiting on the belt to show up.  Also ordered the dapper lighting H4 harness ($50) for shits and gigs.  

 

Shit forgot to ask, I am ordering rockers to replace the one bad one, should I replace all of them at once or can I just do the one? 

Edited by d.p
  • Like 1

Share this post


Link to post
3 hours ago, d.p said:

I will find out soon if it fits, just waiting on the belt to show up.  Also ordered the dapper lighting H4 harness ($50) for shits and gigs.  

 

Shit forgot to ask, I am ordering rockers to replace the one bad one, should I replace all of them at once or can I just do the one? 

I've never seen these replacement rockers. Are they ground factory rockers or is someone reproducing them?

 

The only reason I would say to replace them all is if they are repops. They could have different weights or even ratios (not on purpose, but due to manufacturing).

  • Like 1

Share this post


Link to post
2 minutes ago, Stoffregen Motorsports said:

I've never seen these replacement rockers. Are they ground factory rockers or is someone reproducing them?

 

The only reason I would say to replace them all is if they are repops. They could have different weights or even ratios (not on purpose, but due to manufacturing).

They are itm brand and only cost $10 .... 

Vs oem rockers from nissan( still available) but cost closer to 25-30....

 

Dp dont you have a spare L16 too....

Rob that head, you have 8 rockers at your disposal to find the best one....

 

  • Like 1

Share this post


Link to post

I got the short block and all the parts but the head went into the trash IIRC.  Oh and just looking at the size difference between my alternator and this 510 is night and day man.  

 

tenor.gif?itemid=7791480

Edited by d.p
  • Like 1

Share this post


Link to post
10 minutes ago, d.p said:

I got the short block and all the parts but the head went into the trash IIRC.  Oh and just looking at the size difference between my alternator and this 510 is night and day man.  

 

tenor.gif?itemid=7791480

You should have stripped it for parts before tossing it.... 

But if it's gone then its gone......

  • Like 1

Share this post


Link to post

Have you ordered the rockers yet?

I could probably also send you a rocker or 2..... I put new ones in the head I'm using so I have 16 extra that I'll probably never use, plus all those L20b gaskets....

Text me if you want them and we can work something out..... 

 

  • Like 1

Share this post


Link to post

Looking to order parts and am wondering if I need to replace all my rockers?  Almost all of them are missing some material, maybe 2 of them don't seem to have any damage.  

 

48677925096_6464ccd067_c.jpg

 

48677925101_b207128836_c.jpg

  • Like 1

Share this post


Link to post

'mild came' do you mean mild cam? If so I already got one that came with this motor. 

 

Racer Brown..ss-54-110.

 

IMG_0004-4.jpg

 

But having said that should I replace all these rockers?    And can you guys see the rocker pics in my previous post?  Not sure if they are public or not.  

Edited by d.p
  • Like 1

Share this post


Link to post

I can see them. Reminds me of the cam out of my roadster, all pitted to hell. I definitely wouldn't run the bottom 2 in the top picture.

  • Like 1

Share this post


Link to post

Don't think I will run them either.  Hainz was right $100 engine will turn into a $2000 engine in no time lol.     And should I replace the lash pads if I get new rockers?  If so how do I measure them to know what thickness they are? 

Edited by d.p
  • Like 1

Share this post


Link to post

hopefully you wont need to change the lash pads as the previous owner did already and got the right size. the new rockers hopfully wont be that much different. but if the head and valves are going to be redone anyways this might all change that.  all aftermarket lashpads are flat that I have seen and one just puts it in the mic and measure the size  bottom to the top wear the rocker sets into.

Edited by banzai510(hainz)
  • Like 2

Share this post


Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.