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Posted
Timing? (Cam and sparks)

 

RL31 all dialed in mate.

 

standard sparks.

Standard?

How much max advance?

 

12 degrees idle at 1000 rpm.

 

goes well, but feels like it goes flayt after about 4000, pulls right through to 8000 but loses its edge at about 4 if that makes any sense, still quick, but should be quicker.

Posted
Fiesta Steve tuned Crossflow, that'll make it bark :mrgreen:

 

Nooooo, i want to go fast!

:lol: budget build,Wrong Wheel Drive 13.8 quarter,not bad id say :wink:

 

As for your pinto,sounds like it could be a bad combination with my limited knowledge,45's with a standard flow head ? what size are the chokes,if they're too big the carbs might be sucking more air than the head can flow?

Posted

are the carbs set up correctly? a rolling road would be your best bet as it would tell you exactly where the flat spots are. Also, have you done any headwork??

Posted
Timing? (Cam and sparks)

 

RL31 all dialed in mate.

 

standard sparks.

Standard?

How much max advance?

 

12 degrees idle at 1000 rpm.

 

goes well, but feels like it goes flayt after about 4000, pulls right through to 8000 but loses its edge at about 4 if that makes any sense, still quick, but should be quicker.

 

..and what about the max advance :lol:

Posted
as steve said whats your total advance ,try retarding cam timing :thumbsup:

 

i tried that mate, it got loads of low down grunt and sounded nuts, but went really really flat at the top end...

 

think il have a faf about with the timing.

 

spoke to wayne today and he said ignition timing too...

 

dont get me wrong, cars a flyer but i know its got more to give.

Posted
Fiesta Steve tuned Crossflow, that'll make it bark :mrgreen:

 

Nooooo, i want to go fast!

:lol: budget build,Wrong Wheel Drive 13.8 quarter,not bad id say :wink:

 

As for your pinto,sounds like it could be a bad combination with my limited knowledge,45's with a standard flow head ? what size are the chokes,if they're too big the carbs might be sucking more air than the head can flow?

 

36s mate.

Posted

any ideas on the horsepower your putting out? just built a pinto now with an rl30 and 45's. got a burton stage 3 head though so just wondering what to expect?

Posted

Just take that wheezy old lump out mate & drop the rolling shell off at mine - at least it'll bark once our lump is comfy between the struts :lol:

  • 2 weeks later...
Posted

Update....

 

played with ignition and cam timing....no difference.

port matched inlet.... no difference.

changed carb jetting... no difference.

 

mates engine exact same spec except for 40s instead of 45s, standard 20 head with no skim, and a standard flywheel, everything else is identical.

 

so far ive had 40s and 45s, 2 different heads (1 injection with 40 thou off and 1 standard), 3 different dizzy,s, rejet on both sets of carbs, 2 differet exhaust manifilds and 2 different exhausts, 2 different flywheels (standard and 3kg).

 

the next step is to put the top end on my mates mint block and we will try that.

 

engine goes like stink but it just dont sound right.

Posted
any ideas on the horsepower your putting out? just built a pinto now with an rl30 and 45's. got a burton stage 3 head though so just wondering what to expect?

 

id be suprised if mines any less than 140, not as good as genuine 160 i used to have but deffo more than 130.

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