Civic Type R Clutch Retrofit Details and Progress

[MT_FK7]

Civic X community! I am starting down the road of my own type r clutch retrofit. I have gathered parts and will do my best to post pictures of my progress along the way. The goal is to make anything learned public knowledge and gather any advice from the group as I go.

I bought a used clutch/flywheel/pressure plate from eBay. I was hesitant but the parts were advertised to be off a totaled car with ~800 miles on it. I got a used OEM 1.5t flywheel from a member on the forum that I will use as my doner for the starter ring.

At first glance seems as though the overall diameter between the two flywheels (not including the starter ring) is pretty close. The ID of the pilot bearing is definitely smaller; as my k20 clutch alignment tool does not fit. (But does fit in the oem 1.5t flywheel)

The first step will be to grind the welds off the oem starter ring and get it removed. I will probably start by heating it and using some diy videos from YouTube.

Pics so far:

Updates!!

Got the ring gears off today! To remove the 1.5t I was able to use a dremel to cut the welds that hold the ring gear on. Next I heated with propane and used a pry bar to pop the gear off.

The type r was a different story. We tried the same method with propane to heat the ring gear, not enough heat. Next tried an acetylene torch, too much heat. I was worried about warping the flywheel. So then we used dry ice to freeze the center, this worked. We used a hydraulic press to press the flywheel down and out. Just going a little at a time working our way around the flywheel until it was off.

Things to do:
•use surface grinder to clean up 1.5t ring gear
•make a bushing to put the oem pilot bearing in the center of the ctr flywheel
•get oem ring gear on the ctr flywheel, not sure if I can do this by heating/cooling or if I will need to take the OD if the ctr flywheel down a bit. We shall see!

 

[MT_FK7]

Before reading below:
I did not end up using the center piece from the original flywheel it was easier to just turn one on the lathe, press it in, then machine out the counter bore. These pictures can be found in post 3.

Worked on removing the oem center section out of the original 1.5t dual mass flywheel. This was a bit of a task, ended up having to machine (or grind) off the large rivets holding everything together and pounding them out through the back of the flywheel. There are caps on the back of the flywheel that will pop out when punching the pins out. After this it all comes apart pretty easy and you can press the center section with the oem pilot bearing race out. I will take this piece and machine it to fit inside the inner race of the ctr pilot bearing hole.

Here you can see the big rivets ground down and I am beginning to punch them out the back. Also note there are 4 rivets in the center that need pressed/drilled out.

Here you can see punching the pins out the back side, the caps will just come out with the pins.

 

[MT_FK7]

Here is the ctr flywheel with the bushing being made/installed.

Note the offset from the crank mounting surface to where the ring gear will seat. It is the same between the oem and ctr.

 

[LilToTo17]

Good luck lol have to be very very precise and be able to fit within the Si trans case. It's not easy unless you've done a lot of these 10th gen clutch swaps where you know every inch as well as machining too.

 

[Hondanickx]

Great to finally see someone doing this and sharing it! Looks like the starter ring is a straight swap as the ID is the same between the 1.5t and type-r .Its most likely pressed on and then welded to lock it in place.I would grind of those welds and make a large jig to press the ring off and on .You need to get it off evenly otherswise it gets stuck or might even break.I wouldn't use any other heat on the ring other then welding it back on.It's hardened steel .
What's the pilot bearing number of the 1.5t flywheel ? 6904c4 is from the type-r flywheel right ? 6904 bearing is 20mm ID ,37mm OD and has a height of 9mm. c4 is the bearings clearance.
What's the size (diameter) of the type-r clutch and the 1.5t ?

 

[MT_FK7]

Updates in first post...

 

[Hondanickx]

Why don't you source a different pilot bearing that matches the Type-R hole?
What size or bearing number is the 1.5 and Type-R bearing?

 

[LilToTo17]

Why don't you source a different pilot bearing that matches the Type-R hole?
What size or bearing number is the 1.5 and Type-R bearing?

Lol it's not going to work.

 

[MT_FK7]

Yea type r is a 20mm input shaft, the stock 1.5t is the split ring bushing type, I believe same as previous gen k series. It’s like 21.5-22mm or some odd size. I’ll have to figure it out. I have some old input shafts laying around from previous k series trans builds.

 

[Hondanickx]

Yea type r is a 20mm input shaft, the stock 1.5t is the split ring bushing type, I believe same as previous gen k series. It’s like 21.5-22mm or some odd size. I’ll have to figure it out. I have some old input shafts laying around from previous k series trans builds.

I see the split ring bushing is much higher then the regular ball bearing .

 

[LilToTo17]

I am guessing no progress lol

 

[MT_FK7]

Not for a few days, I’m using the machine shop at work to do most of my work. We have been super busy with real work stuff so this has taken a slight back burner.

Got the welds ground down and flush on the mill/surface grinder

I’m making a print for the insert that will be used to retro the split ring pilot bearing into the ctr flywheel. Hopefully I will be able to get it cut next week as well as get the ring gear pressed on.

 

[imcrspy]

Glad to see you got the flywheel and got things going! Thanks for sharing!

 

[MT_FK7]

Updates above! Thanks imcrspy - your flywheel is going on to do big things haha!

 

[MT_FK7]

More updates in post 3 - ended up just making a new insert for the pilot bearing. Hopefully have the ring gear installed before the end of the week.

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