im running a 1274 with hif44 and stage one with a BBW needle fitted. I have heard that most people have issues with these needles and most tend to get BDL instead. do you think its worth swapping?
Needle Selection
Started by
finch661
, Feb 08 2010 10:48 AM
6 replies to this topic
#1
finch661
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Posted 08 February 2010 - 10:48 AM
#2
Grayedout
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One Carb Or Two?
Posted 08 February 2010 - 12:21 PM
im running a 1274 with hif44 and stage one with a BBW needle fitted. I have heard that most people have issues with these needles and most tend to get BDL instead. do you think its worth swapping?
Depends on what your symptoms are. Both needles are nigh on identical upto station 7 and from then on the BBW is slightly richer so if you want it slightly leaner at part and full throttle then yes change.
#3
jaydee
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Posted 08 February 2010 - 12:25 PM
It depends on how much your engine breathe. Whats the plugs colour like after a good run?
BBW is richer at top end and slightly leaner in the firsts sectors, actually it works better at different stages of tuning and different timing.
Using a BDL you'll have better mpg and no flooding issues. Its probably the best needle for a lightly tuned 1275, a bit like the AAA needle is for small bores (exept heavily tuned engines of course!).
BBW is richer at top end and slightly leaner in the firsts sectors, actually it works better at different stages of tuning and different timing.
Using a BDL you'll have better mpg and no flooding issues. Its probably the best needle for a lightly tuned 1275, a bit like the AAA needle is for small bores (exept heavily tuned engines of course!).
#4
finch661
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Posted 08 February 2010 - 12:37 PM
well the car seems to be drinking petrol and seems to bog down (the car makes the noise, but doesnt really do much, as if it hesitates)
#5
Grayedout
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One Carb Or Two?
Posted 08 February 2010 - 12:55 PM
Is everything else on the car okay? Ignition system? Valve clearances?
Do you know what spring you are using in your carb?
Once you have checked everything else then for the price of a new needle it may be worth trying the BDL as it won't make a huge amount of difference for most of the operating range.
Of course the BEST solution is to take your car to a rolling road where a GOOD operator will be able to modify a needle to suit your car perfectly!
Do you know what spring you are using in your carb?
Once you have checked everything else then for the price of a new needle it may be worth trying the BDL as it won't make a huge amount of difference for most of the operating range.
Of course the BEST solution is to take your car to a rolling road where a GOOD operator will be able to modify a needle to suit your car perfectly!
#6
finch661
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Posted 08 February 2010 - 01:01 PM
yeah the car has been serviced (ended up getting a new coil as well), clearances were done a few months ago, new sprks/HTS and timing set. i dont know whats on the carb at the mo.
#7
finch661
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Posted 09 February 2010 - 11:32 AM
hey, i have just been looking on minisport (i shouldnt be....) but they recommend a BDP needle for a 1275 stage one? anyone used that before?
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