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| Help in identifying these 2 engines https://www.ausmini.com/forums/viewtopic.php?f=2&t=99984 |
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| Author: | br3nt [ Mon May 11, 2020 10:51 am ] |
| Post subject: | Help in identifying these 2 engines |
Iv'e got these 2 engines (to be delivered this weekend) and am noticing subtle differences between them from the pics. In the second pic, there are what looks like cut off hoses just below the spark plugs - but in the second pic, they aren't there. Can anyone shed some light on the differences in engines or school me  Or tell me what engines I have here. Cheers
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| Author: | Bubbacluby [ Mon May 11, 2020 11:21 am ] |
| Post subject: | Re: Help in identifying these 2 engines |
Assuming the engine heads and Carbies etc havnt been changed they are both 998cc rod change engines. Both engine number prefixes should begin with 99. This number pad can be found on the block just below spark plug 1. If the prefix is 10 then it's an 1100cc. Sent from my SM-N960F using Tapatalk |
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| Author: | br3nt [ Mon May 11, 2020 11:30 am ] |
| Post subject: | Re: Help in identifying these 2 engines |
Cheers for the info - do you have an idea about the parts that look "cutoff" just below the spark plug there? |
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| Author: | drmini in aust [ Mon May 11, 2020 12:30 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
Air injection into exhaust ports. Used in late 998 engines which had an air pump. Part of the emission control system. |
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| Author: | Bubbacluby [ Mon May 11, 2020 12:36 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
As the doc said. They were metal tubes that pumped air into the cylinder via a small compressor that bolted above the alternator on a bracket that came off the thermostat housing. Pretty much a non existent setup now days. Sent from my SM-N960F using Tapatalk |
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| Author: | drmini in aust [ Mon May 11, 2020 12:38 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
The air was pumped into the exhaust ports, downstream of the valves. Not into the cylinders. |
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| Author: | Bubbacluby [ Mon May 11, 2020 12:40 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
Yes sorry doc, should have worded/explained it better. Thanks Sent from my SM-N960F using Tapatalk |
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| Author: | br3nt [ Mon May 11, 2020 1:16 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
Thank you very much - great info! So in saying that, with this engine, do I need to source a compressor to make it function or can the tubes be welded (forgive my inexperience) closed. |
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| Author: | simon k [ Mon May 11, 2020 1:19 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
br3nt wrote: Thank you very much - great info! So in saying that, with this engine, do I need to source a compressor to make it function or can the tubes be welded (forgive my inexperience) closed. No, you don't need to find a compressor. The tubes have been cut off and probably soldered over, they'll be sealed well enough for what they do. You could take those cut-off pieces out and replace them with grub screws to make it tidier |
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| Author: | br3nt [ Mon May 11, 2020 1:25 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
simon k wrote: br3nt wrote: Thank you very much - great info! So in saying that, with this engine, do I need to source a compressor to make it function or can the tubes be welded (forgive my inexperience) closed. No, you don't need to find a compressor. The tubes have been cut off and probably soldered over, they'll be sealed well enough for what they do. You could take those cut-off pieces out and replace them with grub screws to make it tidier Great! Thank you I'll do exactly that with the grub screws. Cheers |
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| Author: | gtogreen1969 [ Mon May 11, 2020 1:38 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
br3nt wrote: Thank you very much - great info! So in saying that, with this engine, do I need to source a compressor to make it function or can the tubes be welded (forgive my inexperience) closed. For reference this is what the Exhaust Port Air Injection looks like Attachment: 1977 engine bay with EPAI.jpg
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| Author: | drmini in aust [ Mon May 11, 2020 2:31 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
The grubscrew size is 7/16 UNF. Or if you're a cheapskate like me, use old seatbelt bolts and grind em flush. |
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| Author: | br3nt [ Mon May 11, 2020 2:52 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
drmini in aust wrote: The grubscrew size is 7/16 UNF. Or if you're a cheapskate like me, use old seatbelt bolts and grind em flush. LOL Thank you so much! I was sitting here thinking, how the heck am I going to find the size I need.. Legend
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| Author: | Morris 1100 [ Mon May 11, 2020 2:58 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
The emission equipment was part of Australian Design Rule 27A and is no longer required, ADR27A has been repealed and no longer exists. (despite what a couple of self appointed trolls say) You can't buy leaded petrol any more to make it work properly anyhow. |
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| Author: | 9YaTaH [ Mon May 11, 2020 3:30 pm ] |
| Post subject: | Re: Help in identifying these 2 engines |
Morris 1100 wrote: The emission equipment was part of Australian Design Rule 27A and is no longer required, ADR27A has been repealed and no longer exists. (despite what a couple of self appointed trolls say) You can't buy leaded petrol any more to make it work properly anyhow. Further reading... https://www.rms.nsw.gov.au/about/enviro ... dards.html https://www.infrastructure.gov.au/vehicles/environment/ |
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