thanks mate!!!

I need to check my pipe diameter. doubt it is 2". if its bigger than 1.75", what will be the issue? can i keep the 4-1 extractor manifold?

how about the dual outlet muffler?

If the pipe is bigger than needed, you'll lose a few HP, but it will still run OK. On the plus side it will sound tougher

You can use any manifold you wish: 4-into-1, 4-into-2-into-1, whatever. To be as quiet as possible while maintain the power, I recommend the factory 4-2-1 cast manifold instead of a thin-wall tubular extractor. It will be much quieter while giving same power as un-tuned extractors

You can use any muffler you want, with single or dual outlet. To be as quiet as possible while maintain the power, use a larger-than-stock conventional muffler. Most performance mufflers are noisy, and do not outperform larger mufflers

1st trip to Genting Highland, Malaysia(1740 meter) with my datsun. I can say it was an effortless steady hill climbing. should i thank the 4.11 diff?

On the other hand, there is no sudden acceleration if i floor the gas pedal. But better result if i slowly press the pedal along with the engine rev.
Does it mean i need a thicker SU damper oil?

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Nice photos. What brand are your wheels?


Quote:Sounds like it might be bogging down. I would use the recommended 20W or 10W-30 engine oil in the carburetors

Are they L-series carburetors? If so the needle jet might be too rich, you can try raising the needle by turning the idle adjusting nut in 1/2 turn. Just going from sea level to high elevation will make the carburetor run poorly but a quick adjustment along the way will fix it

Thanks. Those are believed to be Performance Spitfire.
But with only stamp 'made in Australia'
13x7"

Yes its L carburetor with ATF as damper oil

You might need to raise the needle a full turn. Try it at half turns and see

Best to replace the L-series needle with A-series needle, and A-series spring. I've heard that AFT is similar in viscosity to the recommended oil

so the a12GX twin su will be perfect for my a15? If i managed to get another a12gx, i'll keep the twin su and only sell the rest..

quick undercarriage wash. managed to snap some exhaust photos.

I went to 2 exhaust shops. one ask me to add a center muffler at the cat-converter place (red circle) and remove the sports muffler (yellow circle).
Another shop ask me to just replace the sports muffler to a largest standart muffler as possible.

i want quiet exhaust sound and high flow.

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can anyone advice what brand is this wheels? is 14" wheel with 6" width.

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