2400 engine build

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Type 4 Unleashed
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Re: 2400 engine build

Post by Type 4 Unleashed » Sun Jun 17, 2018 1:57 pm

I, agree with Clatter on using something other than the CB VW650 springs, but not for the same reasons. This is to give you an idea of what to look for. Now, the 650 springs are designed for cams with valve lift from .600" to .630" and the 86b is only .500" lift, The 650 springs @ installed height are @ 160 psi, which is way to much pressure for the weight of such small valves, which actually robs power from the motor, but the over the nose pressure @ 500" lift wouldn't be to bad, basically the springs are not for that cam.

So what you should look for are springs designed for a .500" lift cam, Web has dbl spring good for a cam to .510 lift as an example, but there are others more reasonably priced CB has 1490 singles @ 1.500" are 120 lbs and @ .500'' their 220 pds but no coil bind specs, and the 1491 duals don't show any specs at all, and that's one thing that has always sucked about CB, they give very few specs about their products, and if you call them to inquire, they don't even know. I had called one time trying to find coil bind on a set of their springs I wanted to purchase, they had no idea.

So do your research before you buy anything else.
Richard

EMW

“Have you ever noticed how some people never
have the money to do it right, but can always
find the money to do it twice ?”

Eddie010
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Re: 2400 engine build

Post by Eddie010 » Mon Jun 18, 2018 2:20 am

Ray,
Thanks for the info on the spring... needed that.

Richard,
I thought I had gathered enough info, but seems I overlooked some stuff. (especially the max lift for the springs).
But thanks fot the help, now 2 persons said I have to rethink the springs, so will look into this.

This is great help... thank you guys.

Eddie010
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Re: 2400 engine build

Post by Eddie010 » Mon Jun 18, 2018 2:26 am

Clatter,

Weighted the adjusters.

Original M10 adjuster:
Image

SwifelFeet adjuster M10
Image

Ok a bit surprised they weigh the same.
Oooh weight is in grams.

Eddie010
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Re: 2400 engine build

Post by Eddie010 » Tue Jun 19, 2018 2:28 am

http://vwparts.aircooled.net/Beehives-D ... eet-ki.htm

Is this an option, I like that they are single and I don t have to cut the valve guide bosses.
Aircooled net, has printed the specs also… they are for lift up to .550.

Edit: the only thing I don t like about it is the use off keepers, I will have to shim the rockers than.
With probably interference with the stock valve cover.

Ps always had good results with ordering at aircooled.net

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Re: 2400 engine build

Post by Type 4 Unleashed » Tue Jun 19, 2018 3:20 am

You may not have to shim the rockers very much at all if you go with that setup. The additional installed height looks like it's in the retainer, and the lash caps and swivel feet adj's help clear the retainers. I had a set of Gene Berg retainers the same way, that I was able to set up @ about 1.850" with stock length valves. Rocker geo becomes more involved when you use valves over stock length.

But, you still might have to trim valve boss's some, I believe the Type lV boss's are larger than Type 1 boss's.
Richard

EMW

“Have you ever noticed how some people never
have the money to do it right, but can always
find the money to do it twice ?”

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Clatter
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Re: 2400 engine build

Post by Clatter » Wed Jun 20, 2018 2:06 pm

Correct; you do have to cut down the guide boss to the smaller type 1 size to run the beehives..
What's that Noise??

Beginners' how-to Type 4 build thread ---> viewtopic.php?f=1&t=145853

Eddie010
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Re: 2400 engine build

Post by Eddie010 » Thu Sep 27, 2018 3:38 am

Ok,

Fall/winter is coming so I am starting with machining parts for this engine.
But a question, what would you guys suggest for the sizes to machine the heads and case for the 100 mm cilinders?

I can machine the deutz cilinder in whatever size I want so.
Case is now still standard 100mm
Heads still standard 105mm

I have found some info on cilinder sizes and case and heads sizes
Type 4 Empi 100mm - case 106mm - heads 108mm
Type 4 LN Nickies 100mm - case 108.5 - heads 115mm
Type 4 AA 103mm - case 109mm - heads 115mm
Type 4 Mahle 103mm - case 106.8 - heads 112mm

So what are you guys think also considering good sealing for the heads with the 100mm pistons/cilinder.

Thanks in regards

Eddie010
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Joined: Sat Dec 19, 2009 4:27 am

Re: 2400 engine build

Post by Eddie010 » Sat Oct 13, 2018 1:40 am

Got some info gathered.
But would appreciate some info from you guys?

wreck
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Location: Brisbane Australia

Re: 2400 engine build

Post by wreck » Sat Oct 13, 2018 2:31 am

Hi Eddie , I would go to the smallest spigot sizes you can , I went to the same size as the AA's and you don't have much left in the case or the heads . I was discussing his with friends a few weeks ago and we all agreed that machining out into the head stud holes on the heads must really weaken them .
No matter where you go , there you are !

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