128" wiseco K2802 11:1 ?

[yobtaf103]

Going to use these 11:1 pistons with S&S 4.250 cyl ,however using BB calculator heads 89cc/30 thou gasket/Zero deck only getting 10:83 comp, using the spec found wiseco site of -9.8cc dome

Anyone come across this

[Txwezl]

Is that the measured volume of the heads or an estimate. Mine ended up being 88 cc's

[yobtaf103]

Going to use these 11:1 pistons with S&S 4.250 cyl ,however using BB calculator heads 89cc/30 thou gasket/Zero deck only getting 10:83 comp, using the spec found wiseco site of -9.8cc dome

Anyone come across this

Well no one has come across this probably, not sure looks like a senior moment!!
Done the inputs on BB calc today comes out Fine
Zero deck gives 11.35:1 static, 10.27:1 corrected 44 int close cam, 219.2 ccp sea level

[Hillside Motorcycle]

Buildng a 128" currently.
Waiting on injectors.

[ziggy24]

Is that the measured volume of the heads or an estimate. Mine ended up being 88 cc's

Fuel Moto is using that same setup in their 128 piston/cylinder only kit and they state it comes in at about 10.75:1. So my guess is, you are correct.

[yobtaf103]

Is that the measured volume of the heads or an estimate. Mine ended up being 88 cc's

Fuel Moto is using that same setup in their 128 piston/cylinder only kit and they state it comes in at about 10.75:1. So my guess is, you are correct.

Looks like they achieve 10.75:1, with their supplied kit Gaskets (0.045" head?) & about bolt-on 10 thou in the hole then.
With 0.030" head gasket stock heads about 87.5cc zero deck get 11.5:1 static

[scotman623]

Buildng a 128" currently.
Waiting on injectors.

I would imagine you are referring to my CVO RG... So looking forward to the awesome build you are doing for me... Going to be a BEAST 💪

[ziggy24]

Is that the measured volume of the heads or an estimate. Mine ended up being 88 cc's

Fuel Moto is using that same setup in their 128 piston/cylinder only kit and they state it comes in at about 10.75:1. So my guess is, you are correct.

Looks like they achieve 10.75:1, with their supplied kit Gaskets (0.045" head?) & about bolt-on 10 thou in the hole then.
With 0.030" head gasket stock heads about 87.5cc zero deck get 11.5:1 static

Pretty sure the cometic head gaskets I was supplied by FM were .030. Also, from everywhere I read, the factory head volume is close to 89cc.

[Heatwave3]

Is that the measured volume of the heads or an estimate. Mine ended up being 88 cc's

Fuel Moto is using that same setup in their 128 piston/cylinder only kit and they state it comes in at about 10.75:1. So my guess is, you are correct.

Looks like they achieve 10.75:1, with their supplied kit Gaskets (0.045" head?) & about bolt-on 10 thou in the hole then.
With 0.030" head gasket stock heads about 87.5cc zero deck get 11.5:1 static

Just had my 114 upgraded into a 128 by FM. 11.0:1 compression to run with a Wood wm8-408 cam.

[metaliser]

Is that the measured volume of the heads or an estimate. Mine ended up being 88 cc's

Fuel Moto is using that same setup in their 128 piston/cylinder only kit and they state it comes in at about 10.75:1. So my guess is, you are correct.

Looks like they achieve 10.75:1, with their supplied kit Gaskets (0.045" head?) & about bolt-on 10 thou in the hole then.
With 0.030" head gasket stock heads about 87.5cc zero deck get 11.5:1 static

Just had my 114 upgraded into a 128 by FM. 11.0:1 compression to run with a Wood wm8-408 cam.

Do they use Wiseco pistons ? I had a bad experience with those pistones back when the 106 kits were popular for the Twin Cams, the teeny- tiny rings jumped out of the teeny- tiny ring lands and , well you can guess what happened next.

[Heatwave3]

MY 128 Fuel Moto build included Carillo forged flat top pistons for an 11.0:1 ratio
https://www.fuelmotousa.com/i-23897756-fuel-moto-m8-128-big-bore-kit-for-114-117-engines.html

[yobtaf103]

Is that the measured volume of the heads or an estimate. Mine ended up being 88 cc's

Fuel Moto is using that same setup in their 128 piston/cylinder only kit and they state it comes in at about 10.75:1. So my guess is, you are correct.

Looks like they achieve 10.75:1, with their supplied kit Gaskets (0.045" head?) & about bolt-on 10 thou in the hole then.
With 0.030" head gasket stock heads about 87.5cc zero deck get 11.5:1 static

Just had my 114 upgraded into a 128 by FM. 11.0:1 compression to run with a Wood wm8-408 cam.

Do they use Wiseco pistons ? I had a bad experience with those pistones back when the 106 kits were popular for the Twin Cams, the teeny- tiny rings jumped out of the teeny- tiny ring lands and , well you can guess what happened next.

Yes 10.75 kits Wiseco Black coated pistons 3mm scraper with Daytona type jugs