Gerald, using that calculator (very cool) if I enter 78.4 x 88 I get 1907.
With the deck spacers (I don't know how tall they are) wouldn't that give me
the extra 8 to make it a 1915?
I am not trying to MAKE my engine bigger I am just working to figure how my
builder could call it a 1915.
You can't get a 1914 with 88's. If you really have 88's you have either an 1800 (74 stroke) or a 1900 (78 stroke -- 1897 actually).
You have to use 94x69 to get a 1915. Super torque motor.
Here's a table:
http://www.msgulfcoastvwclub.org/TechPages/Tech6.html
Here's a calculator:
http://home.earthlink.net/~jalby/puter.htm
2387cc Will -- you got wheelie bars on that thing?
The general idea FOR A BUS is to stay away from sizes that have to have the
cylinder walls thinned to fit in the bore. That includes 87, thin-wall 88,
92, and for certain applications 90.5. A bus is a completely different
animal from a bug. They just don't cool as well, period. Your brain will
tell you that the thinner cylinder walls can dissipate built up heat faster
-- well, they can, when the motor isn't running. The fact that there is
less metal there also means that when the motor IS running they get HOT a
whole lot faster than thick wall cylinders. And because there is less metal
there they will warp easier.
For a heavy bus go with thick-wall 88's or step up to 94's. 90.5 is OK if your daily drive doesn't include a lot of hill climbing. The 90.5's are somewhat thinner than the machine-in 88's but nowhere near as bad as 92's.
Ronnie in Lake Havasu somehow DOES use 92's to build a bulletproof 1835 for
his own buses. I've seen him load a bus 'til it squats with show sale parts
then drive it to Jerome (SERIOUS mountain climbing). Of course he probably
does planned teardowns at 50K or something.
G2
On Sun, 2 Apr 2006 22:25:45 -0500 Denis Dodson <coocoo@xxxxxxx> wrote:
I don't even know what you just said.
So, what is the formula to figure out the engine size so that we all can understand what the hell you just said?
I have a 1914 according to my first builder. I think that is a 74.8X88. Or
78.4X88
This all started with whether Brian should do someting with his engine other
than 1641.
Dan's bus, Homer, runs very well and strong with a standard 1600. There are
manymany people who swear by 1776s. I know of, at least, one guy who loves
his 1835, although I was warned to stay away because they have a short life
because of the heat.
Chuck, I am surprised that you don't have a problem with the 88 sleeves. I
have been told that they warp because they are too thin for the heat.
When all of you come up for the 4th of July we are going to all fight about
this stuff in person and throw our empty beer cans at each other. The tech
session to beat all tech sessions.
----- Original Message ----- From: "Will Wood" <evilscientistboo@xxxxxxxxxxxxx>
To: <tcb@xxxxxxxxxxxxx>
Sent: Sunday, April 02, 2006 8:37 PM
Subject: [tcb] Re: 88mm pistons
> Wimpy.. I have an FK-8, Pauter Roller Rockers oh, 94 X 86 in my DC..
>
> Zoom Zoom.
>
>
>
> -----Original Message-----
> From: tcb-bounce@xxxxxxxxxxxxx> From: tcb-bounce@xxxxxxxxxxxxx > [mailto:tcb-bounce@xxxxxxxxxxxxx] On Behalf
> Of Denis Dodson
> Sent: Sunday, April 02, 2006 9:47 AM
> To: tcb@xxxxxxxxxxxxx
> Subject: [tcb] Re: 88mm pistons
>
> so if i have a 'mild" cam, is it an engle 100?
>
> ----- Original Message ----- > From: "Lonnie Bergman" <bergmanfamily@xxxxxxxxxxxxx>
> To: <tcb@xxxxxxxxxxxxx>
> Sent: Sunday, April 02, 2006 7:14 AM
> Subject: [tcb] Re: 88mm pistons
>
>
>>I finally got my hands on three used 88 pistons for the motor I had in >>my
>> bus. So I am putting that one back together now. IMHO slip in 88 >> cylinder
>> walls are too thin. The machine in 88 walls are very thick. As for >> cams,
>> My
>> favorite for a bus motor is a scat c25 or engle 100. After my last
>> experience with a 110, I will probably never put one in a street motor
>> again.
>> The guy I got the used 88s from also had a set of new forged 88s for a >> 78
>> mm
>> stroker crank. Pistons only for $50.
>>
>> -----Original Message-----
>> From: tcb-bounce@xxxxxxxxxxxxx>> From: tcb-bounce@xxxxxxxxxxxxx >> [mailto:tcb-bounce@xxxxxxxxxxxxx] On
>> Behalf
>> Of singlecabboy
>> Sent: Saturday, April 01, 2006 11:42 PM
>> To: tcb
>> Subject: [tcb] 88mm pistons
>>
>> I run 88mm Forged pistons with a 110 engle cam , the
>> 88's are slip in, I haven't had any trouble ,butttt ,I
>> think I am extremly lucky , I also change my oil
>> almost after every trip , 200 miles or more, Bob says
>> that his theory is that the folks break the bottom of
>> the skirts as their installing them , butttt, I know I
>> wouldn't have used 88's if I had read all the horror
>> stories first. 1776 is what I 'll probably do next ,
>> with straight cut cam gear , . Good luck , 88's or
>> rearist of the rare at most shops
