Is PULP Better For The Older Carby Motors Options

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eskimo_joe777		#1 Posted : Thursday, 4 August 2005 6:57:39 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 28/03/2005(UTC) Posts: 37		Hey I have a HJ panelvan with a 253 and was wondering if it was better to use the Permium or the BP ultimate and how much difference it actually makes? I know u get better km's out of the newer fuel injected cars but is it the same form the older carby cars? Cheers Justin
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Guest		#2 Posted : Thursday, 4 August 2005 7:52:40 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		From memory, the old Super fuel was about 98 octane in the mid 70's (it dropped to 96 later on) so 98 will be the best for your motor assuming it is in really good nick. Try PULP for a few tanks and then try 98 for a few and see what your car prefers.

trubluhq		#3 Posted : Thursday, 4 August 2005 10:12:17 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 28/04/2005(UTC) Posts: 758		Only use Premium ULP or higher. Never ever use bog standard unleaded. Use valve lube for sure. My QE will get around 17-18MPG around town, and 25MPG on the open road....with a Stromy & 253 Tri combo. My Q and the ex-wifes VX Calais arent much differnet
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Munromad2004		#4 Posted : Thursday, 4 August 2005 11:17:33 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 24/04/2005(UTC) Posts: 718		I use premium unleaded in my stock standard HQ 253 Monaro and I swear by it. The car runs perfectly and returns good mileage. I also use an upper cyclinder lubricant which I buy in bulk which saves you heaps compared to buying it in those little 50m
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trubluhq		#5 Posted : Thursday, 4 August 2005 11:33:46 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 28/04/2005(UTC) Posts: 758		It was always Ok (or better) to run ULP in a non-ULP car. However to run leaded petrol in a ULP car was a major no-no, as the lead content in petrol reacted with the cat to produce some really noxious and toxic vapour. It also stuffed the cat at the sa
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Munromad2004		#6 Posted : Friday, 5 August 2005 1:56:44 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 24/04/2005(UTC) Posts: 718		John, I was actually more interested in the fact that it is highly illegal to remove the catalytic converter on a factory unleaded engine (massive fines) but on an older engine you don't even need to run one. Why then is it illegal to remove on one an un
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Guest		#7 Posted : Friday, 5 August 2005 3:45:03 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		From memory, the ULP ADR is ADR31 and it mandates the use of catalytic converter(s). The cats operate at VERY high temperatures (in the region of 700 degrees Celsius IIRC) and burn many of the toxic emissions from the motor thereby turning them into less

trubluhq		#8 Posted : Friday, 5 August 2005 7:26:32 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 28/04/2005(UTC) Posts: 758		Hi Munromad..agree with you as to why and agree with Dave as he had the ADR. John
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Munromad2004		#9 Posted : Friday, 5 August 2005 8:23:51 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 24/04/2005(UTC) Posts: 718		I recently read an article in a car magazine and they tested some modern hi flow cats on a dyno and found that they had a negligible effect on power output so Dave is right when he said that it is definitely a viable option to retrofit them to an old vehi
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trubluhq		#10 Posted : Friday, 5 August 2005 9:09:30 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 28/04/2005(UTC) Posts: 758		Hi Munro.. Sounds like Eskimo Joe and myself could do something with this info. Pity I run twin systems ~ more costs ! So revised heads and valves..twin cats..hmm around $1000.00 I guess. John
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Munromad2004		#11 Posted : Friday, 5 August 2005 10:55:42 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 24/04/2005(UTC) Posts: 718		I'll have a quick flick through the current stack of magazines on my coffee table and see if I can find the article and I'll post their recommendations for you all to read. From memory it was only as small part of their testing. I think they started o
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eskimo_joe777		#12 Posted : Saturday, 6 August 2005 4:55:23 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 28/03/2005(UTC) Posts: 37		Thanks for the info guys, it will be interesting to see the article and their recommendations. trubluhq i have a twin system aswell so i guess if i was lookin at that then i would be up for similar cost. Cheers Justin
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Guest		#13 Posted : Sunday, 7 August 2005 9:29:41 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		just to add to the conversation, I usually use BP ultimate (98 octane) in my RB30 VL however I have just gone though a tank of 91 octane and it performs really badly in comparison, the car is way more sluggish and pings a heaps under load. I will try 95 o

Guest		#14 Posted : Monday, 8 August 2005 8:38:32 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Hi Elton, Compression Ratio of NA VL 3 litre was 9.0:1. 5th gear is 0.759:1. HTH. Cheers...Dave

Guest		#15 Posted : Monday, 8 August 2005 6:04:31 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		thanks mate :) explains the pinging

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