39 replies to this topic

[lakeside]

My mate sent his 74 LH, SBC 350 to be engineered and it didn't pass. He was told it will never happen with a SBC due to ADR 27. He spoke to another engineer and was told the same, it will never pass. What is the major problem with a LH Torana/SBC and this no.27?

[N/A-PWR]

https://www.google.c..._sm=93&ie=UTF-8

[UCgazman]

Surely a charcoal canister and a pcv valve would satisfy adr27 requirements? adr27a requires more pollution gear but didnt come in till '76...

[rexy]

He needs a new engineer...

[S pack]

Surely a charcoal canister and a pcv valve would satisfy adr27 requirements? adr27a requires more pollution gear but didnt come in till '76...

1974 LH didn't have the charcoal canister and PCV valves were in use years before ADR 27 came into effect.

[neglectedtorana]

Think Rexy is right, New engineer

I always thought 27a started from 6/76 and I having to remove a Holley from a Torana I used to have when it went over the pits

Engineer I am dealing with for my LS1 conversion says it will have to pass a pollution test which I think involves some measuring device in the tail pipe so would presume the sbc would be done the same

[lakeside]

He needs a new engineer...

That is what I told him because I do not understand. It has something to with pollution and the chev.

[S pack]

Don't even need a charcoal canister, with ADR 27 that came in with ADR27a as mentioned, PCV with closed loop( breather back to aircleaner)

ADR 27 compliance mandatory from 1/01/1974.

Charcoal Canisters effective from 1/01/1975.

ADR 27a compliance mandatory from 6/76

[UCgazman]

I know when charcoal canisters came in and that it was after adr27. I'm saying if you had those two things even a really strict douche of an engineer couldn't argue non-adr compliance (and its not like they'd affect performance or are hard to fit).

[S pack]

I know when charcoal canisters came in and that it was after adr27. I'm saying if you had those two things even a really strict douche of an engineer couldn't argue non-adr compliance (and its not like they'd affect performance or are hard to fit).

Apologies Garth, however, the way I read your post you implied the charcoal canisters came in with ADR 27a.

Edited by S pack, 13 July 2015 - 10:24 PM.

[crabba67]

Dave,No ADR27 on this ADR tag 1 month 74?

Attached Files

•  adr 1 74.jpg   215.07K   5 downloads

[crabba67]

all the tag.

Attached Files

•  042.jpg   207.11K   6 downloads

[S pack]

Dave,No ADR27 on this ADR tag 1 month 74?

Interesting, no 27 on tag yet has chassis prefix DHQ as expected with the ADR change, thanks Anthony.

.

[UCgazman]

Apologies Garth, however, the way I read your post you implied the charcoal canisters came in with ADR 27a.

 

No worries, I probably should've worded that post better

[Dr Terry]

ADR27a was from 1/1/76 not 6/76. A minor but sometimes important point. Also I have ADR27 as 1/4/74 so that DHQ Compliance is interesting.

 

ADR27 mainly centred around limiting CO% @ the exhaust & a 'closed' PCV system.

 

I've had many SBC V8s in 1974/5 cars go thru rego over the years as long as those 2 areas are OK. As long as it hasn't got a lumpy cam & you can get the CO at idle below 1.5%, with a print out to prove it, you shouldn't have too many dramas. Also just make sure you have factory looking air cleaner & rocker covers with the PCV air intake to the underside of the air cleaner.

 

Some engineers that I have dealt with are tougher than others so shop around.

 

Dr Terry

[yel327]

Stupid Engineer. GMH fitted 350 SBC's to HQ's and these were ADR27 compliant in 1974 with L30 (350) engines. Just needs a PCV.

 

HQ's don't seem to get ADR27 on the compliance plate until about 4/74 which is when EHQ chassis numbers started. his is consistent across all of the 4 x Aussie assembly plants. Just going by memory they had the PCV fitted engines a lot earlier.

[S pack]

ADR27a was from 1/1/76 not 6/76. A minor but sometimes important point. Also I have ADR27 as 1/4/74 so that DHQ Compliance is interesting.

 

Dr Terry

Please recheck your ADR info Dr Terry.

ADR 27a applies on and from 1/07/1976.

 

Also ADR 27 on and from 1 Jan 1974 for Passenger vehicles. Passenger vehicle derivatives (HQ utes, vans, I tonners?) N/A.

[S pack]

Stupid Engineer. GMH fitted 350 SBC's to HQ's and these were ADR27 compliant in 1974 with L30 (350) engines. Just needs a PCV.

 

HQ's don't seem to get ADR27 on the compliance plate until about 4/74 which is when EHQ chassis numbers started. his is consistent across all of the 4 x Aussie assembly plants. Just going by memory they had the PCV fitted engines a lot earlier.

PCV valves were introduced during production of the HR or.Hk?

[S pack]

HQ's don't seem to get ADR27 on the compliance plate until about 4/74 which is when EHQ chassis numbers started.

Oh yeah E would be the prefix change for HQ going to ADR 27, I'm forgetting the HQ was one letter ahead of the LJ in the chassis prefixes.

[yel327]

EHQ is:

 

ADR26 replaced by ADR27.

ADR4A replaces ADR4.

ADR23 introduced.

 

These are all supposed to be 1/74 onwards yet don't appear until 4/74. Maybe GMH had dispensation to align HQ with LH?

 

There is more to ADR27 than just PCV as I said above, as it also includes ADR26 which is idle emissions plus a few other things. I think these cars also get the stovebox on the exhaust manifold and flap on the aircleaner? The 350 HQ engines started with all this stuff (different carby, stove box, PCV etc) in 1973 at some stage, but these 350 powered HQ's also don't get EHQ and ADR27 on the ADR plate until 4/74 (and stay the same until the last HQ's were complianced in 10/74). 

Edited by yel327, 14 July 2015 - 09:46 AM.

[Dr Terry]

Please recheck your ADR info Dr Terry.

ADR 27a applies on and from 1/07/1976.

 

Also ADR 27 on and from 1 Jan 1974 for Passenger vehicles. Passenger vehicle derivatives (HQ utes, vans, I tonners?) N/A.

Yeah, it was a typo. I meant 1st July 1976 & then typed 1/1/76

 

The other one was a typo too, ADR27 came in 1/4/76 as I said, but it was for EHQ not DHQ, making the above compliance plate correct.

 

Dr Terry

[yel327]

Also ADR 27 on and from 1 Jan 1974 for Passenger vehicles. Passenger vehicle derivatives (HQ utes, vans, I tonners?) N/A.

 

Correct. You won't find 27 on a HJ commercial, only on passenger. The first Holden commercials to get a 27 were HX's with 27A, although HQ commercials for some reason got ADR26 and ADR27 as applicable on the ADR plate although it was not applicable to them. So in theory a HJ commercial allows the most freedom of legal engine other than a very rare 1971 complianced HQ commercial (as ADR26 was applicable from 1/72) - so essentially only 11/71 and 12/71 with a few 10/71 around too. HJ commercials had the same engines and carbies as the ADR27 compliant HJ passenger cars afaik, and they also were fitted with canisters and sealed fuel tanks.

[Dr Terry]

PCV valves were introduced during production of the HR or.Hk?

Yes, PCV valves were first seen mid-HR. The first were the 186S motors released in June 1967. The std 161 & 186 engines followed soon after.

 

The ADR involved is not for a vented PCV which these cars had with their vented oil caps. A 'closed' or 'sealed' PCV system also has the rocker cover vented back thru the air cleaner. Many V8s had this this set-up already, because it had been a requirement in the US since the mid-60s, so early 253/308 V8s had a vented oil cap, but most SBCs & Ford from around 1968/69 had the sealed system.

 

Dr Terry

[S pack]

HQ's don't seem to get ADR27 on the compliance plate until about 4/74 which is when EHQ chassis numbers started. his is consistent across all of the 4 x Aussie assembly plants. Just going by memory they had the PCV fitted engines a lot earlier.

Really strange that the compliance plate wasn't amended until 4/74 considering HQ's were produced ADR 27 compliant from 1/10/1973.