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What Ho Peeps,
                      Rgs head verses old 180 head? can the latter be made to be as good as the former? can you just fit( as mr jelly says) an rgs head to an older 180? what is the main difference between the two? Please bear in mind that the head will be heavily modified for max Bhp. Chin Chin.

              FFF
          Padlock
 
padlock said:
What Ho Peeps,
                      Rgs head verses old 180 head? can the latter be made to be as good as the former? can you just fit( as mr jelly says) an rgs head to an older 180? what is the main difference between the two? Please bear in mind that the head will be heavily modified for max Bhp. Chin Chin.

              FFF
           Padlock
Click to expand...

By my limited understanding, the answers are:

Rgs head verses old 180 head? can the latter be made to be as good as the former?

Not really - RGS is an updated casting.

can you just fit( as mr jelly says) an rgs head to an older 180?

Yep  :D

what is the main difference between the two?
About ?300  :P

Pete
 
Mr. Fuckity,

The old 180 head can be modded to perform just as well as the RGS type, porting is almost identical, just down to valve sizes really.  You then need to contend with the shortcomings of the early head such as possible cracking at the chain tunnel, dodgy cam location, etc.  Does mean that no DPO has tried his sweaty little hand at porting, many have been "ported" beyond reclamation.

Only the 1000SFC head offers a real starting advantage with half-decent porting ex-factory.  I also suspect these underwent a very slight alteration to the combustion chamber shape with slightly re-located plugs, probably to prevent cracking between seats and plug bore.

I've re-worked several early heads to 1000SFC spec and beyond, all came out quite nice. :D

piet
 
Piet,

I do believe you can make an early head perform as well as an RGS head, but not sure if you can make it as reliable... (I had assumed that was what Scrumpy was asking).

Be nice if was possible, though  :)

Pete
 
Pete,
I have not asked a thing about head. If I did it would probably be to compare standard head with deep throat!!

Scrumpy
 
sfcpiet said:
sfcpiet said:
  You then need to contend with the shortcomings of the early head such as possible cracking at the chain tunnel, dodgy cam location, etc.
Click to expand...

Wot I sed... :D

piet
Click to expand...

Ooops....so you did  :-[

Pete
 
Scrumpy said:
Pete,
I have not asked a thing about head. If I did it would probably be to compare standard head with deep throat!!

Scrumpy
Click to expand...


You been at the cider again Scrumpy?  :D
 
Correct cam blocks needed of course and oil ways are better.Use 180 carb inlets etc
LJ
 
Some have Steel combusion Camber, actually later ones, even 180?, and some have still Alu combusion Camber. The Steel maybe not breaking between Valve seats and Spark Hole, but they say that the Engine gets hotter (Temperature...)...
Not shure if they chanced the Cambers back to Alu on RGS...
The Alu Heads soon or later are Breaking....
 
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