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Like I say, I just know the same "theory" that everyone does- if the block and head grow a few thousandths(inch) warm, then cool off, your "bolt" must have more stretch than that. Also, If your initial torque puts a few thousandths(inch) stretch then the assembly of head, gasket,...

ARP headstuds will fix that, Jens.

Ian from Canada.


It all has to do with bolt stretch, and the spring effect. 12.9 bolts are brittle, not springy. Others have argued the theory (saying all steels are alike, per their engineering text books...hahaha) but the results can't be argued with.

http://www.jalopyjournal.com/forum/showthread.php?t=256713&highlight=mercrusier" onclick="window.open(this.href);return false; 47 page thread on these motors http://www.youtube.com/watch?v=2p26LxNjm10" onclick="window.open(this.href);return false; 272km sugmotor...7.78s I hav...

Hi Erland,

That's one way. I'd say 4G63 rods are a bit better yet...They take the stroke to 88.9mm. That's what my daily driver uses. No problems in 10 years. Pistons are custom.

Erlund: I will find the email from Yella Terra. His price seemed expensive. As the the geometry, I took a simple approach: that the rocker shaft centerline longitudinally, should be equal to the valve tops' height at half the max lift. Are you getting 97mm by sleeving, then? Lacke: The company who m...

Hi Erland. The one thing I noticed years ago is that the stand height is set up for best geometry with about 9mm lift. Of course this was exactly what the majority of the early b18's had. By the time the b20E came about, lifts were still not more than 10.5 theoretical, so possibly 9.5mm net. If you ...

[ iadr: Okey I didnt knew that.. But as you said, i think im better of with the 740-rotor, I could buy one 164-rotor for the same price as two 740-rotors.. Yes stock-brakes for the 140 works, i know. But with the brakes wented in the front and the 1031 in the back, its okay to have 180 hp. Is that ...

Okey, does it fit better with 164-disc? I know that this combination of caliper/disc works, becuse its on Fredriks Escort: http://www.gatebil.no/forum/viewtopic.php?t=9189 (weight ~900 kilos) It says he had a problem with the fluid boiling, guess i gonna find out if it happens to me to... :roll: Hå...

better than my Swedish...

Traditionally, the way to go was 164E rotors/discs/skiva(?) and the 240 vented calipers, but over here, 164E rotors are getting rare. I'll be interested to see how it works.

what are you using for calipers and do you have to use adaptors?

I'd liek to try an offest grind on a b30 crank- probably 6 bolt, as I belive teh quality of steel to be better. You get get 89mm stroke by using Mitsubishi 4g63 connecting rods on a modified Volvo crank. This can be done anywhere in the world. So, with a 92.5mm bore you are looking at 3588cc. You ne...

Etheleyne glycol antifreeze coolant in the oil, yes? I have seen this before.

I think this comment won't apply to you, because you had this problem with the flow bench (was it you)? But remember all US programs use format: 1 . 0, never 1 , 0. While I grew up using 1.0 format, I can easily imagine while concentrating on the inputs, habit taking over and entering 88,9 , for ex...

http://www.youtube.com/watch?v=KDMOV_fmuLU

http://www.youtube.com/watch?v=4L7eKGccAIY

Any more info on the build?
I have had something just a little like this in mind for a few years.