Author Topic: Intek 21hp v-twin build questions..  (Read 1469 times)

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Offline tommy23490

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Intek 21hp v-twin build questions..
« on: March 31, 2017, 11:21:26 PM »
I have a 21hp Intek v-twin 407777. I want to build it to have some reasonable horsepower. I'm actually a small engine mechanic at an industrial mower, fork truck, generators and many other things. I've never done a performance build though. So far I have the motor tore down, removed the governor. I got a complete gasket and bolt set and 2 new coils. From reading on here I believe you guys are saying mill .085 off the heads. I know I need valve springs but I am not sure if I've found the right ones or not.  https://eccarburetors.com/estore/260-ec-valve-spring-set.html?category_id=276 these are the ones I think I need. I need to know which keepers and locks I need to go with them. I know which rods and flywheel I need. I can't seem to find a cam, I don't think they are making them for the Intek 40's someone please help me there. Maybe any other suggestions anyone may have? It's just a personal project so no sanctioning bodies I have to abide by.. Sorry for the long post. I have been reading other's posts but most Intek stuff is old news. Thanks in advance, Tommy. One more thing. If any parts that will help me that I can get from briggs, I get them at cost.



Offline zach87cp

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Re: Intek 21hp v-twin build questions..
« Reply #1 on: April 01, 2017, 07:15:38 AM »
Call precision cams for the cam if you have a cast cam they can use it for a core or you will have to buy a core if it's the powered metal one .They made the 40s both ways and some 40s have 1/2 inch journal and some have 5/8s..
Zach Rupert
Rupert Racing
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Sponsored by ace racing engines .

Offline tommy23490

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Re: Intek 21hp v-twin build questions..
« Reply #2 on: April 01, 2017, 11:22:48 AM »
I emailed them and they said they don't do Intek cams. I dropped my heads off today to get them milled .080 I'll try to call them during business hours.


Offline donanza

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Re: Intek 21hp v-twin build questions..
« Reply #3 on: April 01, 2017, 11:57:28 AM »
Precision sells Intek cams

Offline tommy23490

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Re: Intek 21hp v-twin build questions..
« Reply #4 on: April 01, 2017, 04:45:51 PM »
Ok. Cool thanks I'll definitely give them a call..

Offline BIG AL 202

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Re: Intek 21hp v-twin build questions..
« Reply #5 on: April 01, 2017, 05:18:04 PM »
Isky also has good cams, Tim Isky does some real nice good work! Oryou might want to call EC and ask about cams, they do sell them for Intek twins.
ALWAYS VOTE FOR ED!   FONGS BROTHER FROM ANOTHER MOTHER!

Offline berthyd

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Re: Intek 21hp v-twin build questions..
« Reply #6 on: April 01, 2017, 06:22:40 PM »
Isky has left the building. Haven't been able contact him I months. And I need a cam!!!!

Bert
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Offline BIG AL 202

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Re: Intek 21hp v-twin build questions..
« Reply #7 on: April 03, 2017, 07:24:03 AM »
Isky has left the building. Haven't been able contact him I months. And I need a cam!!!!

Bert
THAT SUCKS! Any idea what happened? Anybody
ALWAYS VOTE FOR ED!   FONGS BROTHER FROM ANOTHER MOTHER!