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leaded or unleaded fuel?
7 years 6 months ago - 7 years 6 months ago #39866
by Bhavash
leaded or unleaded fuel? was created by Bhavash
hello Everyone,
i just bought my X 1/9 gran finale (will post some pics soon) and reading through the forum i stumbled on someone saying their 1988 car runs on leaded.
Ive filled up twice now with unleaded.
which should it be?
Am i damaging it with unleaded?
95 or 97 ron?
i just bought my X 1/9 gran finale (will post some pics soon) and reading through the forum i stumbled on someone saying their 1988 car runs on leaded.
Ive filled up twice now with unleaded.
which should it be?
Am i damaging it with unleaded?
95 or 97 ron?
Last edit: 7 years 6 months ago by Bhavash .
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- Pete Pearson
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7 years 6 months ago #39869
by Pete Pearson
Replied by Pete Pearson on topic leaded or unleaded fuel?
It will be fine on unleaded, although you may have to retard the ignition timing slightly for 95 RON fuel.
Th belt and braces thing is to add a lead substitute and octane enhancer with each fill up.
Th belt and braces thing is to add a lead substitute and octane enhancer with each fill up.
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7 years 6 months ago #39870
by Bhavash
Replied by Bhavash on topic leaded or unleaded fuel?
Thank you
How can I tell if the ignition timing has already been retarded? It drives well on 95.
I might try on 97 on next fill up to see what happens although the mix will make it about 96.
I have a classic mini too and use additives on that. Is there any advantage with additives?
How can I tell if the ignition timing has already been retarded? It drives well on 95.
I might try on 97 on next fill up to see what happens although the mix will make it about 96.
I have a classic mini too and use additives on that. Is there any advantage with additives?
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- Pete Pearson
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7 years 6 months ago - 7 years 6 months ago #39871
by Pete Pearson
Replied by Pete Pearson on topic leaded or unleaded fuel?
The mini has a cast iron head, so the additives are primarily to protect the exhaust valve seats from erosion and valve seat recession,
The X1/9 has an alloy head with steel valve seat inserts which can cope with unleaded fuel, so not essential but the octane booster in certain products may make it run a bit better.
If yours is running well on 95 I'd leave it as it is.
The X1/9 has an alloy head with steel valve seat inserts which can cope with unleaded fuel, so not essential but the octane booster in certain products may make it run a bit better.
If yours is running well on 95 I'd leave it as it is.
Last edit: 7 years 6 months ago by Pete Pearson. Reason: valve seat
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- Andy Rowley
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7 years 6 months ago #39873
by Andy Rowley
Blue Gran Finale F100FAW
As seen in Classic & Sports car....
As seen in Auto Italia.....
As seen on Fifth Gear....!!!!
Lido ALF 704S
Replied by Andy Rowley on topic leaded or unleaded fuel?
Agree with Pete.
I've been running my GF on unleaded since I bought it in 2002 with no problems.
I've not bothered with additives with mine either. (I generally forget to add them when filling up anyway!)
If it does start running a bit lumpy get it tuned up and it should be fine.
I've been running my GF on unleaded since I bought it in 2002 with no problems.
I've not bothered with additives with mine either. (I generally forget to add them when filling up anyway!)
If it does start running a bit lumpy get it tuned up and it should be fine.
Blue Gran Finale F100FAW
As seen in Classic & Sports car....
As seen in Auto Italia.....
As seen on Fifth Gear....!!!!
Lido ALF 704S
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