fuel?? what can i run on

[pete46]

Hi newbie on here so hello to you all,recently purchased a 1973 ta22 16 st can i run it on unleaded without any mods it currently running with an additive,thanks pete

[ifc63]

TA22 is running the 2T-B engine which has an aluminium head and hardened seat inserts as standard. So unleaded is fine.
I can vouch for this as both my road-going Sunchasers are 2T-B engined and I've done over 20,000miles over the last 4 years in them with no bother.
The only engine to be careful of is the 18R fitted to RA23/RA28 Gen 1's and RA40 Gen 2's as these are cast heads.
Either the 2T-G or the 18R-G twin cam engines are OK on unleaded as they have aluminium heads as well.

[pete46]

Thanks very much for the quick responce,i,ll go check the engine no,s will the engine need to be retuned or should i re fuel a couple of times to flush the old fuel through

[ifc63]

Apr 7, 2010 8:52:52 GMT pete46 said:

Thanks very much for the quick responce,i,ll go check the engine no,s will the engine need to be retuned or should i re fuel a couple of times to flush the old fuel through

No need to retune as designed for the same octane as premium unleaded. If it's a standard TA22 with no engine swap it should be the 2T-B engine as that's the T part of the TA22 designation.
Should look like the top one of these pics with the lower one being the 2T-G twin cam:



Engine code should be on the VIN plate on the bulkhead anyway.

[Uncle Bob]

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