Golden Lodge HLD spark plugs - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 10 (permalink) Old 05-23-2019, 01:26 PM Thread Starter
NMS
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Golden Lodge HLD spark plugs

Hi
I have a 1964 Giulia spider with a later 1750 engine.
I came across some NOS Golden Lodge HLD spark plugs.
I understand that they are for Twin Spark engines.
They have a smaller hex head, I guess because of space issues with the TS engine.
The thread length is the same.

1. Do the HLD have the same heat range as HL?
2. Will the HLD be OK in a 1750 engine (non TS)? Does anyone have experience with HLD plugs in a non-TS engine?

Thanks
Naftali
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post #2 of 10 (permalink) Old 05-24-2019, 09:18 PM Thread Starter
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Anyone?
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post #3 of 10 (permalink) Old 05-25-2019, 02:44 AM
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The 1300 and 1600 GTA had Lodge 2HL as per hand book

Last edited by Steve105; 05-25-2019 at 02:51 AM.
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post #4 of 10 (permalink) Old 05-25-2019, 07:11 AM Thread Starter
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Yes, the 2HL are also specified for the 1750.
Since the HLD are later plugs, specified for the TS, I was wondering whether they are "back compatible" to the older engines.
Thanks for any input.
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post #5 of 10 (permalink) Old 05-25-2019, 07:46 AM
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I think we’ve all switched to NGK around here.

Tom

1963 Giulia Spider (1750 engine)
1974 GTV
1991 Spider
Former: 1987 Milano Gold
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post #6 of 10 (permalink) Old 05-25-2019, 01:00 PM
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I'd run them if you could still buy them ...
Pete

'71 1750 Series 2 GTV:
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156 Series 1 v6 ... and remember it's all just opinions
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post #7 of 10 (permalink) Old 05-25-2019, 07:17 PM
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Hi

Have absolutely no knowledge/experience of HLD plugs. But this sites says not compatible with 2HL....

https://www.sparkplug-crossreference...vert/LODGE/2HL

Look up on same site HLD....

Maybe just heat range but....

Sorry not much help.

Richard
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post #8 of 10 (permalink) Old 05-25-2019, 11:45 PM Thread Starter
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Quote:
Originally Posted by PSk View Post
I'd run them if you could still buy them ...
Pete
"If you have to shoot, shoot. Don't talk"
So I got them already, and now I'm talking
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post #9 of 10 (permalink) Old 05-26-2019, 11:42 AM Thread Starter
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Quote:
Originally Posted by richards View Post
Hi

Have absolutely no knowledge/experience of HLD plugs. But this sites says not compatible with 2HL....

https://www.sparkplug-crossreference...vert/LODGE/2HL

Look up on same site HLD....

Maybe just heat range but....

Sorry not much help.

Richard
An interesting site. Thanks.
Comparing to NGK, the 2HL is referenced as matching NGK heat range of 6 and 7, and the HLD matches 5 and 6.
So I deduce that the HLD are a little hotter than the 2HL, but not by much.
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post #10 of 10 (permalink) Old 06-15-2019, 04:19 PM
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I have tried NKG BP5ES in my 65 Veloce Spider; none of the plugs have light brown tips; most are black-does this indicate poor carb adjustment (too rich)?

Advice welcome.

Last edited by 330.gtc; 06-16-2019 at 07:51 AM.
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