ATR vtec solenoid

Post by **Drax** » Wed Jan 14, 2015 4:04 pm

same or different to a Prelude one? just trying to work out any missing parts ill need for the engine build.

ta

Post by **NafemanNathan** » Wed Jan 14, 2015 4:13 pm

I'm pretty sure it's identical. Only the ATR one doesn't use an oil pressure switch. It does have the port for one though, it's just capped off...

Post by **Merlin** » Wed Jan 14, 2015 4:21 pm

The a7 has an oil pressure switch, well my H22a7 did.

Merlin wrote:Here are some pic I have taken of my VTEC solenoids:

H22a with a snapped pressure sensor I need to replace

H22a2

H22a7

H22a8 which does not have the the same sensor but does have a blanking bolt.

http://www.ludegeneration.co.uk/honda-p ... 636-20.htm

Post by **NafemanNathan** » Wed Jan 14, 2015 4:26 pm

Not much of an answer here, but it's looking like it's an OBD2 thing not to have an oil pressure switch in the Vtec solenoid...

http://honda-tech.com/honda-prelude-4/u ... m-1826061/

That's mine pictured above and that was from an ATR.

Then the ATR engine in my 5th gen has one, but it's not connected. You can just see the green connector at the top of the pic...

So I assume it's a Vtec solenoid from an OBD1 Prelude and they just haven't removed the plug and capped it.

Post by **NafemanNathan** » Wed Jan 14, 2015 4:26 pm

Merlin wrote:The a7 has an oil pressure switch, well my H22a7 did.

Is that because you were running it OBD1?

Post by **Merlin** » Wed Jan 14, 2015 4:32 pm

No it was an OEM engine from an Accord and I hadn't done anything to it.

Lings also shows it to have the oil pressure switch (#17):

http://www.lingshondaparts.com/honda_ca ... ck_03=6377

Post by **Merlin** » Wed Jan 14, 2015 4:34 pm

NafemanNathan wrote:Not much of an answer here, but it's looking like it's an OBD2 thing not to have an oil pressure switch in the Vtec solenoid...

http://honda-tech.com/honda-prelude-4/u ... m-1826061/

It is true that the Type-S does not have the oil pressure switch. Which is just confusing

Type-S H22a, H22a7 and H22a8 are all pretty much the same so why would the a7 have one but the a8 and Type-S H22a dont

Post by **Drax** » Wed Jan 14, 2015 4:35 pm

hmmm ok

does this mean I can use the prelude vtec solenoid on an ATR head then?

Post by **Merlin** » Wed Jan 14, 2015 4:36 pm

Yes you should be fine

Post by **Drax** » Wed Jan 14, 2015 4:43 pm

marvellous thank you both