DG Cylinder Heads for RD350

[RDryan]

Just found this listing on Ebay. Buy It Now price is pretty steep though?...a mere $1,050 What do you think?...is the seller asking too much, condition?, the real McCoy?

https://www.ebay.com/itm/306324684886?_skw=rd350+dg+heads&itmmeta=01JWQ2GTC9R8VZSGTP8AJ2SGKN&hash=item47525fc056:g:ykEAAeSwvw5oN0DQ&itmprp=enc%3AAQAKAAAA0FkggFvd1GGDu0w3yXCmi1dulI%2FB6i1tnqcHOSK5pkuiQF74V%2BXCszQNms74Yn3tV%2FOy1lkQbq%2Bx8rbBbJuk674RlTzWEVg6bruUw5bOppdbzx5RZLmRnmd31%2FuMnzOlyrwpHJpxhFP1q3fTgAXXWgQSARJWq2IlJ9wquA5C3R8WGDch1UVAe74Vb5a7FVNNoeYsFkZ08GElKNF1V2YlPuyV0aQ4jeKUfGKF09jMYzP%2BD%2FNf7YZI2AOmXfAZ6%2FH7SOtXOURV5WrB1D0eZw6oVUk%3D%7Ctkp%3ABk9SR6Kmw-LlZQ

[grcamna3]

I'm not sure if these were listed from a while back;they look familiar,while I was searching.

The seller may not have had the Best Offer option before.
They're good,but not new,and the price  ..

[RDryan]

Yeah that price is thru the roof but the seller must be banking on the fact that they just don't come up for sale very often. I think even a best offer would have to be kinda expensive for what it is. Aside from that I was curious about the condition regarding the surface of the squish band area. Seems kinda rough. I personally don't like the gold anodized finish, I would probably paint them black if they were mine.

Are they really all that in terms of performance? I've read it's pretty much a 5hp bolt on item. I guess from what I've learned you can take stock heads and with custom cutting machine work pretty much achieve all the claimed performance gains anyways.

[AAAltered]

Those are "real".  Here's my experience:
- Send them out for a proper modern dome AND ORing groove (I failed this step).  SCR did mine but that was years ago.
- Send them out and get them re-annodized.  I sent my DG swingarm arm and heads to the same guy so the gold matches.
- I needed extra thick washers to properly torque them, but they are available.

Performance?  Who knows but they get looks and comments everywhere I go.  It's bling.

As recieved, blown up 400 heads.


Redomed for modern gas and a 350.


Reannodized:


Complete package:

[rideitfast]

HVC cycle had reproduction 350 DG heads recently and they still have 250 DG heads for $850. Don't know if they will make more for the 350. I have a set of VP billet heads on my RD.

[Yamanatic]

Worthless trivial pursuit concerning DG heads.
Back around 1960 a company call 'Cal-Fab' made Radial Fin heads for Yamaha TD1/TD1A racers that match the 'modern' DG Radials. I'm not sure if Cal-Fab was absorbed by DG or just sold the rights to the design, but this is where they started.

I had 2 sets of the Cal-Fab Radials (both TD1A/TD1B or YDS2/YDS3 stud spacing - they are different), and had the chance to compare castings 'in-person;' they match the DGs:



Warren

[Simmons1]

I have had a set of DG heads along with some other RD parts kicking around my attic for about 30 years. I keep saying I need to get an RD, but never have. Have been content with my H2, Buffalo, and now TDR. Guess I need to shit or get off the pot with them.