these work with twin sidedraughts

Sweet let me know how you go MYB110 as I've got twin 40s on gx manifold, if you get them to fit I'll pay you to fix them since I'm local ;)

The only way the Chinese are able to reduce their costs to this sort of level is by using inferior quality material.

The items will be light and easily cracked, they will offer some rust resistance but will not out last a conventional set of extractors made from quality material.

Having said that the price cannot be scoffed at coming in at less than 50% of a quality set but the age old rules still (and always will) apply;

- you get what you pay for.
- if it is too good to be true, it probably is.

We should ask D since he bought some of those ridiculously cheap Chinese parts.

dizzie was perfect on my daily which is now owned by Benny.
I used a 85$ 3 core honda civic radiator modded to fit my
suzuki carry 1.7L converted from g13bb to baleno g16b and
for 3 years ran better than original motor and radiator.
Also full stainless system for xr6 turbo for $600 from
Radiant Radiators, they are chinese made sample and still
used by my brother as his daily with no issues.

The welds are quality robot welds usually in this large
automated factories and most of the quality is good for
parts that are not too complicated yet many Chinese built
Grand wall utes have no issues mechanically but horrible
crash test ratings. Id get some if I wasnt going 16v head.

Well they turned up quick,nice surprise to get home from work to!
I first grabbed a magnet and it didn't stick to the pipes which means quality is not as cheap as i thought they would be,as to the many sheets of 1.2mm 304 no.4 s/s that i have used from china and a fridge magnet would stick to them without hesitation!
Will have to give them time to see if they crack or not.
To my surprise they do fit a GX twin weber manifold,where i thought it might touch on number 4 primary it has a good 3-5mm clearance but number 1 only has 2-3mm clearance between them which is cutting it a bit fine for heat transfer to inlet manifold.
I measured tube thickness on primary,36mm/1.5mm wall so they are 33mm id and outlet is 50.8mm/1.5mm wall so 47.8mm id!
All bends are machine mandrel not press bent.
Overall they look pretty good for the money so time will be the test to see how they last!

good to know, thanks for taking the time to measure the dimensions.

Thanks man

Too easy boys!

Cheers.

Thanks for that, they sound like a decent buy.

A magnet shouldn't stick to 304 (or any 300 series) since it's an Austenitic SS. If it's magnetic (ferritic) it's probably low on nickel content. I guess the only other things to watch are pitting corrosion and corrosion near the welds. That more about selecting the right filler rod, pickling properly and good process control.