Engine rule clarification

[Brian Ellinger]

Engine rules reads "must use factory head for block"

As I understand this means no 20r head for 22r block, and no weird early/late 22r head/block mismatch.

I was just asked by someone why we are possibly going to deck the head, etc to bump compression, and not just use a 20r head.

[a2b]

Originally Posted by Brian Ellinger

Engine rules reads "must use factory head for block"

As I understand this means no 20r head for 22r block, and no weird early/late 22r head/block mismatch.

I was just asked by someone why we are possibly going to deck the head, etc to bump compression, and not just use a 20r head.

i understood it to mean, use a factory head. i see what you are getting at. the "for" in that sentence is speaking to you and tell you that it means more like: "use the head that came with that specific block". i think when camo wrote that, he just meant, use factory stuff, not aftermarket aluminum heads and stuff....

at least thats how i interpret them.

[luvrox]

Originally Posted by a2b

i understood it to mean, use a factory head. i see what you are getting at. the "for" in that sentence is speaking to you and tell you that it means more like: "use the head that came with that specific block". i think when camo wrote that, he just meant, use factory stuff, not aftermarket aluminum heads and stuff....

at least thats how i interpret them.

So, am I to take that as a nod that for the 07 season any Toyota made 4 cyl sohc head for that block style is acceptable?

[Heywood]

camo was asked, many times, specificly about a 20r/22r hybrid and the answer was allways NO.

changing the rule is one thing, pretending like it didnt exist is another.

[Pook]

Originally Posted by Heywood

camo was asked, many times, specificly about a 20r/22r hybrid and the answer was allways NO.

changing the rule is one thing, pretending like it didnt exist is another.

Thats what I read back when the original rules were hashed out.

[Air Ride]

My understanding was factory head factory block, as long as it 20r, 22r or 22re it was good to go.

[Air Ride]

Originally Posted by Heywood

camo was asked, many times, specificly about a 20r/22r hybrid and the answer was allways NO.

changing the rule is one thing, pretending like it didnt exist is another.

Typed in Camo and 20r, 22r into search, nothing on him saying no to 20r head and 22r block.

[Pook]

Originally Posted by Air Ride

My understanding was factory head factory block, as long as it 20r, 22r or 22re it was good to go.

factory head and factory block andy of those engines but I'm pretty much 99.9% sure it was specified that it would have to be the head that came on that block

[Heywood]

Originally Posted by Air Ride

Typed in Camo and 20r, 22r into search, nothing on him saying no to 20r head and 22r block.

Try this post #209 & 210


http://www.pirate4x4.com/forum/showt...ad#post1807876

[Air Ride]

Originally Posted by Heywood

Try this post #209 & 210


http://www.pirate4x4.com/forum/showt...ad#post1807876

That post is Camo's confusion that 20r also came in 4x4 trucks.

[ACE-CAGE-#29]

The BOD has discussed this matter. The way the rules read is not clear, it threw me for a loop also. When I first read it I assumed that you had to keep a block and the matching head.

After speaking with John James and the other BOD members, it has been clarified that it is acceptable to run a 22R block with a 20R head.

I am sure the rules will be updated so that they are clear and direct.

Matt

[Pook]

I read a few more post and it just mentions in several different posts that 22r intake manifold must be used, but camo never mentions the head. Which is kinda useless with the allowance of efi.

The days of the stockish motors are passing by.

[luvrox]

Originally Posted by Heywood

camo was asked, many times, specificly about a 20r/22r hybrid and the answer was allways NO.

changing the rule is one thing, pretending like it didnt exist is another.

I am really hoping for somthing more than tribal knowlage to define the rules of this class. Ya know what I mean?

[Hammer Hog]

Seems to me that if a LCE motor can be built and allowed, seems a 20r head would be more than acceptable on a 22r.
Just my .02 for what it's worth...

[azyota]

It make no real diference to me, but my understanding all along was that you had to use the head that came on the block your using. No swapping between 20 and 22r/re.
What real performance gains are we talking here? For what we're doing I have the think any advantage is pretty minimal.

[Air Ride]

Originally Posted by Hammer Hog

Seems to me that if a LCE motor can be built and allowed, seems a 20r head would be more than acceptable on a 22r.
Just my .02 for what it's worth...

Exactly, a little commonsense.

There is never going to be a phone book size rule book for this class. Its for fun and the thrill of competition.

[a2b]

the 20r and 22r, 21ru ....they are all the same motors...bascially. i had a motor reubilt by a guy who doesnt speak english. so i dont even know what my new motor head and block came from but its stock and its a 2.4 toy motor from the 80's...thats all that matters

[desertoy]

Originally Posted by luvrox

I am really hoping for somthing more than tribal knowlage to define the rules of this class. Ya know what I mean?

Please don't assume that there is something wrong just because someone asks a question. This matter has been covered. Just because there was a learning curve back when Camo thought of the class doesn't mean there is tribal knowledge.
If you want to be comfortable with the rules yourself, learn everything that came on a toyota pickup from 1979 thru 1995. Then it will make sence.

[Tim@DOA]

If it were to come down to it, you can take a 20r block to 94mm, same as the 22r block, vintages are untraceable, you can take an early block and deck it to the low deck spec, combos are truly endless here. I think you're going to end up with somewhat of a "pointless" point if the 20r mated to a low block becomes a "no go" statute. It would be a speed bump at best, easy to format around the literal scripted rule.