Captain InsaneO

iTrader: (38)

I was wondering how much I could safely mill my Dart 205 heads with 2.02/1.60 valves, .045 GM MLS gaskets and Diamond pistons with -2 valve reliefs, and the regular F14 cam.. and 7.35 pushrods.

I'm sure some may say to clay it.. but I was really hoping someone might have already done this.

If anyone knows how much I can safely mill them, what would the final compression ratio be?

Thanks.

King James

iTrader: (13)

Benny I think your wrong on your gasket thickness.



I have a set of .040 Cometic's BNIB if you want them.

Sigforty

Mine are milled 35 thou. I was running the Cometic head gasket and the F14 cam on stock pistons with no relief.

vettenuts

iTrader: (4)

It appears that Futral does a lot of Dart head installations, since you are running their cam why not give them a call. They can probably provide the best information.

ThunderStruk

iTrader: (1)

If you have a -2cc valve relief you can definitly mill them .030 with no issues. Like Mark said, we milled his .030 with stock pistons and his still cleared fine!!!!!!

Captain InsaneO

iTrader: (38)

Thanks, James. You're right, I was wrong, they are .052 part # 1258-9226

So it appears I could swing .035 off the heads and still have good clearance, but is there any way of knowing what my CR would be? I don't want to go over anything that will prevent me from running pump gas. I will also be running a 200 shot if that matters any.

Thanks for the responses guys!

Captain InsaneO

iTrader: (38)

Thanks again, John for calling me back, and your help!!

King James

iTrader: (13)

It looks like the stock Darts are 62cc. Using that you and the stock gasket you should be around 10.71 SCR and 7.99 DCR. Milling to 59cc's would put you around 11.1 SCR and 8.29 DCR. Combining the milling and a .040 gasket puts you around 11.48 SCR and 8.54 DCR.

I bolded the around because FMS doesn't use comp grinds and the calculator I used is based on comp grinds.

ThunderStruk

iTrader: (1)

The other thing to remember about his setup when figuring out the compression is that the Diamond shelf pistons usually come higher out of the deck than a stock piston does as well, so his compression will be higher than that with the .040 cometic

Sigforty

John, if i remember correctly my current setup has most of the pistons out the hole either .11 or .011 I cannot remember where the decimal was placed, but they were Diamond pistons. It was nice though seeing all the numbers written on the block as Allan was putting it together. It tells me that Futral takes the time to measure everything and record the results on the block so there was no looking for the numbers later.

gts500

i fly cut my diamond pistons cuz they tell me am runing pretty close cuz of g5x3 and the 62cc. and the jucie too. i have the stock gm sheet metal gasket wht is the actual thickness of it.
could i go for .040 and run safly??? cuz its sound intresting to get mor DCR
how about milling to 59cc with that setup.
ooh one more thing :
i noticed that dart doesnt flow exhaust number verey good how about to port the exhaust doest it help ???
cuz most of the other market heads flow verey much higher than dart heads specially exhaust numbers .

PREDATOR-Z

No one asked the Q, so here goes> What is the LSA/ICL of that 232/234 you plan on running?

Captain InsaneO

iTrader: (38)

598/598 on a 112

PREDATOR-Z

Then 59cc

Captain InsaneO

iTrader: (38)

Ok.. well it appears I am going to have a 358 rather than a 347 because the crank is offset ground. I am still trying to get a very accurate reading on what my compression ratio is.

Using this http://www.rbracing-rsr.com/compstaticcalc.html

Not knowing what my stroke is, but a 3.905 bore -2cc valve reliefs, 59cc chambers .040 head gaskets or .052 not knowing my deck height.. but reading where sigforty was at .011 I came up with 11.2 with the .052 and 11.6 with the .040 using what I think is the stock stroke of 3.662 (I am probably wrong on that, and I am not trying to act like I know what the hell I am talking about)

More help please?

crazylane

iTrader: (19)

Dude, this gave me a freaking headache. Learn to type....

gts500

dude learn how to read loooool

the way i write is understandable for my home boys in US but if u cant then try to be take a long drive

crazylane

iTrader: (19)

Home boys??? What home boys?

Also what does this mean?

(but if u cant then try to be take a long drive)

And just to make things understood, I was only being Sarcastic... Lol

gts500

looooooooool
its ok man the problem is i type so fast so some time i type wrong words spelling etc...

but thanks for your advice anyway
and really am happy to get any correction anytime

see yaa