# Toyota: 22r carb, or 22re go?
**URL:** http://forum.driveonwood.com/t/toyota-22r-carb-or-22re-go/5641
**Category:** General Discussion
**Created:** [February 2, 2021, 4:24am UTC](http://forum.driveonwood.com/t/toyota-22r-carb-or-22re-go/5641 "2021-02-02T04:24:58Z")
**Posts on this page:** 6
**Page:** 3
### Author:  [@Norman89](http://forum.driveonwood.com/u/Norman89)
#### Post date: [February 9, 2021, 11:16pm UTC](http://forum.driveonwood.com/t/toyota-22r-carb-or-22re-go/5641/41 "2021-02-09T23:16:34Z")
Thanks Wayne
Have you seen any discernable difference in gas production between the slightly different diameter fire tubes? Or have you experimented with fire tube thickness? I just sent you a pm before I saw you had posted here. I have access to a 11" pipe 1/2" thick and was wondering if that would work for a fire tube in the toyota
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### Author:  [@Wayne](http://forum.driveonwood.com/u/Wayne)
#### Post date: [February 10, 2021, 1:23pm UTC](http://forum.driveonwood.com/t/toyota-22r-carb-or-22re-go/5641/42 "2021-02-10T13:23:13Z")
Good morning Marcus.
In most cases when I build something it is not what may be best but what I have available to me.
I think a 11 inch diameter pipe would work out OK by tuning the unit with the proper choke plate .
1/2 inch pipe is heavy and I can’t give much advise on that . The heaviest I have used is 1/4 inch and I think most of the time 3/16 inch ,
A 1/2 inch fire tube will serve as and give somewhat of a flywheel effect but may be too much . It will take longer to get fired up and running .
The expansion rate for 1/2 inch material is going to be a lot different than the materials that are welded to it so not sure how it will affect welds .
3 /16 x 12 inch pipe seems to be fairly common and can easily be cut down to whatever diameter you want .
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### Author:  [@Norman89](http://forum.driveonwood.com/u/Norman89)
#### Post date: [February 10, 2021, 4:48pm UTC](http://forum.driveonwood.com/t/toyota-22r-carb-or-22re-go/5641/43 "2021-02-10T16:48:43Z")
Well I’ll keep looking. I don’t want to deviate from the recipe to far on a first build till I have the basics down and learn the system and how to operate it
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### Author:  [@pobrien603](http://forum.driveonwood.com/u/pobrien603)
#### Post date: [February 10, 2021, 6:52pm UTC](http://forum.driveonwood.com/t/toyota-22r-carb-or-22re-go/5641/44 "2021-02-10T18:52:13Z")
Marcus, Around here sign companies have a lot of bits of pipe usually 12" diameter and 3/16" wall. Some of the guys on the forum or in-person thought that 3/16" worked well for them. The only comment I remember was that they thought it might take a couple of minutes more to come up to temperature. I don’t recall anyone trying to use 1/2" wall pipe.
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### Author:  [@ohlerron](http://forum.driveonwood.com/u/ohlerron)
#### Post date: [April 16, 2021, 1:25pm UTC](http://forum.driveonwood.com/t/toyota-22r-carb-or-22re-go/5641/45 "2021-04-16T13:25:18Z")
I have some lengths of bridge piling here in Michigan. This is spiral welded pipe formed from flat coil stock and rolled into a helix and welded. There is a weld bead on the outside so there is some fitting involved for welding fins to it. I’m not certain of the diameter. I can check if there is interest.
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### Author:  [@Norman89](http://forum.driveonwood.com/u/Norman89)
#### Post date: [April 16, 2021, 2:17pm UTC](http://forum.driveonwood.com/t/toyota-22r-carb-or-22re-go/5641/46 "2021-04-16T14:17:03Z")
I thank you very much for the offer, I found a piece to work with and started a build thread 😁👍
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