Visual Differences in Different Lock and Retainers

[Blown&Injected]

Any easy way to tell the difference between the 787 Retainers and 795 Retainers?

How about the 648 and 614 Locks.

I only have what should be 795's and 614's so I cannot do a side-by-side.

Talked to Comp Cams today and they said just going from 7* Locks and Retainers to the 10* locks and retainers should give me about +.050 more Installed Height and going to the 10* retainers with the 614 +.050 Locks should be about +.100. It is not working out like that for me.

Thanks

 

[gnxtc2]

Any easy way to tell the difference between the 787 Retainers and 795 Retainers?

How about the 648 and 614 Locks.

I only have what should be 795's and 614's so I cannot do a side-by-side.

Talked to Comp Cams today and they said just going from 7* Locks and Retainers to the 10* locks and retainers should give me about +.050 more Installed Height and going to the 10* retainers with the 614 +.050 Locks should be about +.100. It is not working out like that for me.

Thanks

Locks
614s: 10* will have more steps on the inside than 614s
648s: 7* will have one step on the inside, where it would lock into the valve
stem

Retainers
787s: They are for the beehive springs. Outside diameter is 1.030"
795s: Can't find the number

Exactly what are trying to to do. I went through with this last week to put together my TA heads. When you use the 10* lock and retainers, the retainer moves higher up on the valve stem giving you more installed height. When you move the retainer higher, you might have to use lash caps because the rocker might hit the top of the retainer.

Feel free to e-mail or post here

Billy T.
gnxtc2@aol.com

 

[Blown&Injected]

I am trying to get the Installed Height closer to 1.800". Comp Cams said that 155#'s on the seat is too much. I have 318 open and that is cool, but they say closed pressure is too high.

I first got the 7* stuff - 787's and 648's. This gave me 1.735". So I ordered the 10* 795 Retainers and the +.050, 614 Locks. But if you are telling me that 614's have more steps inside, then it looks like I got the wrong locks. Not sure how more steps would work in the locks. Would it not be just the one land, or step for the one groove in the valve stem?

I'll send you pics of what I have.

 

[ijames]

Billy, exactly what parts did you use and what installed height did you wind up at on your TA heads? Mine as assembled from Nick seem to be 1.800" installed height with standard double coil springs. I've been thinking of going to the beehives but wasn't sure what locks and retainers to keep the same installed height. (Sorry for the slight hijack, Steve.)

 

[Blown&Injected]

Comp Cams says 155 on the seat is too much for a street engine and it looks like the best people have been able to do with the Iron heads is about 1.73", and with the Behives, that is too much seat pressure according to the mfg.

However, the open pressure is right on at 318#'s so to get the closed pressure down will hurt open pressure.

Carl, what type of double springs are you talking about? Do you have the specs handy, It looks like it is time to start looking at different options.

 

[VadersV6]

You dont need more than 120 lbs seat pressure, and more than 250-275 open with the kind of lift I imagine you're running. I machined and set up valve springs and all that stuff on thousands upon thousands of heads at my old job. that open pressure you have is wayyy too much. If you're running beehives, the numbers go down even further. In fact, the majority of engines I built that were running about .500 lift, didnt require more than 230-250 open pressure. We never experienced any valve float on the dyno with these numbers either. A dual spring really isnt necessary until you've passed .550 lift, and the pressure requirement spread between closed and open becomes larger.

 

[ijames]

Steve, quoting Nick Micale: The springs are TA part no. V1125 and installed at 1.87". These are on TA aluminum heads, and I had told him that I wanted springs compatible with the ATR 214-210 hydraulic roller I plan to run.

 

[Blown&Injected]

With 1.6 rockers, I will be at .528" lift.

1.87"!!!! If I could just get the Installed Height to 1.800" - it is sounding like I might be OK. That would reduce the closed pressure about 20#'s and give me 135 closed and about 298#'s open.

Comp Cams quoted 135 and 318, when I called the tech line, but that is just what it says on the box of Beehive Springs. I do not know who I talked to, but I will ask for the person another poster recommended at Comp Cams.

I would think that a spring installed at 1.87 would be way too tight in my heads because of the short height I am dealing with right now.

So what makes you opt for the bigger on the intake type cam? Seems like most are now going bigger on the exhaust - says me with the new 218/212 cam

 

[ijames]

Um, a good deal on an ATR kit that someone bought and decided not to use?