#1
11th February 2003 - 11:31 PM
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Can i do it? I just got given a 1973 corolla (old RICE...yay) and I wanna put some ULP in it...like optimax or the stuff from caltex...anyway I was wondering if it would be ok to do? It shouldnt knock because of the high octane...only thing I wanna know if it will heat up to much or something? |
Masdarati
Post #5
LRP and Optimax are nearly the same octane rating, BP and Shell have a handout on there pumps which tells you what cars you can run optimax in. you can buy a kit for LRP cars that hooks up to your motor which allows you to run unleaded, it is called "valve saver" or something like that, i can find out the proper name if you want. |
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blown13b
Post #6
get it retuned after you change over LRP and Premium have different burning qualities. |
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blown13b
Post #8
ummm i dont think you read my post properly!!! tell me why you think that the valve seat lube is required on some cars??? the lube is suposible there to stop valve seat recession. BUT you only need to use that if your not going to use LEAD REPLACEMENT PETROL right? WRONG!!! |
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§ileightĄ
Post #9
blown13b is right.....most ppl think that they need to use an upper cylinder lubricant with any kind of ULP if their motor was meant to run on Leaded....I used to run my old celica (18R motor) on premium cause it wasn't much more expensive and I got more to a tank out of it. I was also able to raise the ignition timing a little 'cause of the higher octane rating and it never gove me any problems |
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the red krawler
Post #10
Yeah not much point adding Optimax and expecting to go faster. |
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the red krawler
Post #13
[quote]...im just going on what the fuel companies have said...[/quote] |
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§ileightĄ
Post #15
[quote][quote]...im just going on what the fuel companies have said...[/quote] |
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March_Hare
Post #24
[quote]get it retuned after you change over LRP and Premium have different burning qualities. |
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Bevan Boy
Post #25
OK...well i have a 351 Cleveland that was rebuilt and ran on leaded for 2 months then on optimax for 4 months. |
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March_Hare
Post #27
You might find that when switching to PULP your timing is causing it running alittle lean (especially if it was running on ULP before hand). A downside of your timing being outside of optimal is that it can effect temperatures and cause the vehicle to run hotter. |
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March_Hare
Post #33
No problems. |
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Bevan Boy
Post #34
yeah not sure about the head couldnt ge onto the guy either flow 410hp and i have an edelbrock manifold and 750 Holley carb and massive cam but that doesnt help u much so if i dont run UCL with it what can happen? |
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blown13b
Post #35
oh so mr hare now timing is measured in rich an lean, not retard and advance anymore!!! yeah have you heard about the other factors that cause pinging?? for example. carbon build up, wrong plugs, timing, compression ratio, head design, hot intake air, so just to show you it isnt ALL to do with compression ratios!!!! so mr hare go do some research on the more important things. in the time i worked in a recon shop (1YEAR) i cant recall to many heads having a big VSR problem to do with LRP. and from what i have been taught lead was added for more octane level as back then they liked the idea of higher compression ratios!!! now you may go read the back of a UPPER CYLINDER LUBE brand and it might say different. but for fuck sake even if i am wrong about that you dont have to take it that far!!!! |
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