|
05-13-2019, 08:48 AM | #11 |
Member
Join Date: Dec 2005
Posts: 248
Likes: 291
Liked 129 Times in 24 Posts
|
Re: Locked out distributor advance question
I'd just set the timing at 3000 rpm as you get a few degrees of timing difference from idle to 3000 from distributor, cam/distributor gear clearances and cam end play.
|
Liked |
05-13-2019, 01:08 PM | #12 |
Member
Join Date: Apr 2014
Location: Mesa, AZ
Posts: 491
Likes: 157
Liked 221 Times in 71 Posts
|
Re: Locked out distributor advance question
It's done, one small lock washer, probably for a #10 screw, fit perfectly. Did not noticeably increase the space between the two surfaces but was just enough to be able to tighten down firmly. No more movement at all.
|
Liked |
05-16-2019, 01:27 AM | #13 |
Senior Member
Join Date: Aug 2004
Location: So. Cal.
Posts: 651
Likes: 4
Liked 54 Times in 33 Posts
|
Re: Locked out distributor advance question
Between all of the allowable tolerances of the cam and dist. gear and the rubber band up front, (timing chain) you'll never remove all of the slop. But don't worry about it. When it's floored its tightened up.
|
05-16-2019, 09:40 AM | #14 |
Member
Join Date: Apr 2014
Location: Mesa, AZ
Posts: 491
Likes: 157
Liked 221 Times in 71 Posts
|
Re: Locked out distributor advance question
Agreed, when I said no more movement I meant in the centrifugal advance mechanism itself. There was no noticeable change in the gear clearance, and I didn't add to the shims.
|
05-16-2019, 12:13 PM | #15 |
Veteran Member
Join Date: Mar 2002
Location: Miles From Nowhere
Posts: 7,414
Likes: 2,579
Liked 4,447 Times in 1,693 Posts
|
Re: Locked out distributor advance question
Back in the 70's, GM sold a pack of distributor shims. They were .010 or .015 maybe ?
Ten to a pack , and it would take about half of them to shim up a distributor gear to remove most of the play there. Always wondered why they left them that loose . GM must have seen as a hi-po issue, or they wouldn't have sold them. I wonder if they are still available or somebody has them as NOS ?
__________________
We are lucky we don't get as much Government as we pay for..... Will Rogers |
05-16-2019, 12:56 PM | #16 |
Senior Member
Join Date: Jul 2014
Posts: 561
Likes: 33
Liked 47 Times in 32 Posts
|
Re: Locked out distributor advance question
I always use one very light spring on the advance. Engine starts at a small degree then flings out after 500 rpm to full advance. Easy to start any high compression engine. Also use a locking collar to allow no shaft up and down movement. I use a stock dist except when needing a tach drive.
Mike |
05-18-2019, 08:40 AM | #17 |
Member
Join Date: Apr 2005
Location: san antonio tx
Posts: 255
Likes: 5
Liked 28 Times in 15 Posts
|
Re: Locked out distributor advance question
I thought the Summit brand distributors like the ready to run type were MSD. I found a pack of Moroso brand distributor shims at a speed shop a few months ago.
|
05-18-2019, 02:03 PM | #18 |
Senior Member
Join Date: Aug 2004
Location: So. Cal.
Posts: 651
Likes: 4
Liked 54 Times in 33 Posts
|
Re: Locked out distributor advance question
I've been building distributors for 30 years, and no longer can find shim kits. If anyone knows please share. Thanks.
|
05-18-2019, 02:15 PM | #19 |
VIP Member
Join Date: Nov 2007
Location: New Jersey
Posts: 1,776
Likes: 70
Liked 398 Times in 189 Posts
|
Re: Locked out distributor advance question
This^^^ I would never recommend a locked out distributor when using a stock or stock type distributor. I’ve been running my distributors with 18-20 degrees mechanical advance and all in by 2000 rpm for 25 years. The reward is no hard starting, no kickbacks, no broken flexplate teeth and no broken starter drives. Spins over like the plugs are out.
|
05-19-2019, 04:38 AM | #20 | |
Member
Join Date: Oct 2014
Posts: 172
Likes: 669
Liked 22 Times in 14 Posts
|
Re: Locked out distributor advance question
Quote:
https://www.competitionproducts.com/.../#.XOEV0aR7mUk Rick Thomason GTOMayhem |
|
Liked |
Thread Tools | |
Display Modes | |
|
|