Rajo head bolts

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mklooksup
Posts: 78
Joined: Mon Apr 22, 2019 9:03 am
First Name: manny
Last Name: Kourounis
* REQUIRED* Type and Year of Model Ts owned: 1915 pickup 1915 Delivery van 1925 Fordor at Lillekers 1924 Tudor
Location: New york
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Board Member Since: 2012

Rajo head bolts

Post by mklooksup » Mon Jun 23, 2025 5:00 pm

Hi everyone,
I need head bolts to use with my RAJO OHV. Does anyone know what to use? Thanks for your suggestions.

Manny
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walber
Posts: 239
Joined: Sun Jan 06, 2019 12:55 pm
First Name: Walt
Last Name: Berdan
* REQUIRED* Type and Year of Model Ts owned: '18 Speedster had 25 touring and 26 coupe
Location: Bellevue, WA

Re: Rajo head bolts

Post by walber » Mon Jun 23, 2025 5:42 pm

For my overhead, I prefer using studs rather than bolts. With studs I can be sure of getting full engagement with the threads in the block. Hopefully that lessens the likelihood of stripping them out. I install the studs with anti-seize to make sure I can get them out again. Not sure the length needed for your RAJO but for my Fronty, I ordered the Model A studs that go through the water outlet area, they are 5 3/4". Snyder's shows them at $2.50 each.
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Gary_in_MN
Posts: 94
Joined: Wed Jan 23, 2019 9:18 am
First Name: Gary
Last Name: Anderson
* REQUIRED* Type and Year of Model Ts owned: 1927 Roadster/ Depaul OHV
Location: St. Paul MN

Re: Rajo head bolts

Post by Gary_in_MN » Wed Jun 25, 2025 5:11 pm

Hello: I used https://arp-bolts.com/. I used them on my 4 valve Rajo and my 8 valve overhead DePaul. I cleaned each block hole and measured the depth and wrote it down. Measure the thickness of the head gasket and write that down. measure the thickness of the head and write that down too. Call them they may have something close in stock. They have high quality products. Gary

PS: Yes that was a thick head.
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Topic author
mklooksup
Posts: 78
Joined: Mon Apr 22, 2019 9:03 am
First Name: manny
Last Name: Kourounis
* REQUIRED* Type and Year of Model Ts owned: 1915 pickup 1915 Delivery van 1925 Fordor at Lillekers 1924 Tudor
Location: New york
MTFCA Life Member: YES
Board Member Since: 2012

Re: Rajo head bolts

Post by mklooksup » Thu Jun 26, 2025 5:27 pm

Thanks for the information guys.
Manny
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