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#1 Bullfrog

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Posted 20 January 2024 - 12:14 PM

Hi all.

Ive just found 3 holden heads in my shed with the 2811930 number on them and was wondering what they are off.

Cheers in advance Matt.



#2 S pack

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Posted 20 January 2024 - 12:59 PM

2811930 suits 2250cc, 2850cc & 3310cc low compression engines and 3310cc high compression engines (exc LJ XU1), pre ADR 27A.

Edited by S pack, 20 January 2024 - 01:00 PM.


#3 yel327

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Posted 20 January 2024 - 01:10 PM

Most commonly found on HQ, HJ, LJ, LH and early LX 202/3300 engines. They'll also pop up in other places like late HG with 202 and on low compression 173/2850 engines which are most often found in HQ and CF Bedford. Pretty common head.



#4 rodomo

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Posted 20 January 2024 - 09:24 PM

2250 with a low comp head? How did they ever run?



#5 S pack

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Posted 20 January 2024 - 09:41 PM

2250 with a low comp head? How did they ever run?

They would have just kept chugging along.
 



#6 Dr Terry

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Posted 21 January 2024 - 08:17 AM

2250 with a low comp head? How did they ever run?

Actually for their purpose & in their day they were fine. Remember these weren't for use in Australian capital cities as daily transport, they were built for places were Standard (<90 octane) petrol was all they had. 

 

The vast majority of Lo-Comp type engines were used in remote communities or export markets like PNG & other Pacific Islands etc. where the old 'Super' grade petrol wasn't sold.

 

The 2250 LC engine still produced 90 bhp & 115 lbs/ft which was way better than most 4-cyl engines of the day.

 

Dr Terry



#7 yel327

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Posted 21 January 2024 - 08:18 AM

Probably no worse than a low comp 149 or 161 in a Holden.






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