I am starting a rebuild of a motor and I've heard nothing but good things about the Wiseco piston ring compressor. I'm just curious though, will it work fine for my stock rebuild? I'm not using Wiseco pistons/rings, I'm using factory OE pistons and rings.

I presume it will work because it is based off of bore size.



There is an image for reference. My other option is the generic 'parts store' piston ring compressor such as this:



I really don't feel like busting a ring during the install. Then again, I've never used a piston ring compressor previously. I'm just curious if anyone here has experience with the Wiseco tapered piston ring compressor or any other tapered piston ring compressor for that matter.

I'm open to any opinions on installing pistons into the cylinder. I've been researching and watching a ton of videos.

 

I have an ARP one. One size only taper bore compressors are a DREAM. Wipe a little oil on them, orient your rings, and with a little knuckle thump (like a friendly knock on the door) and all my pistons were in.

 

I have both ARP and Wiseco tapered ring compressors. I can't remember off the top of my head which one, but one even has a lip built in on the bottom. I assure you, they are well worth the cost. Once you use one, you will never want to use the ratchet style ever again. The piston just glides in like butter in comparison.

The scissor style compressor isn't bad, but still nowhere near as nice as the tapered compressors. The reason you don't see a ton of tapered compressors is because of the initial cost and bore specific design. You can use any of the ring comoressors with cast or forged pistons without issue. Like you assumed, they are specific to the bore, not the piston.

 

I have the wisecos 81.5mm 82mm 84.5mm. same as the arps but I think they are a good bit cheaper. these guys are right u will never go back the piston drops in like butter

 

I really only need 1 right now and in the future, I may need a second one. I'll pick one up. $30-40 isn't bad IMO.

Wiseco doesn't sell them on their website, they just have information about them. So eBay is my best bet? I'll check out the sponsored web pages from HT, sometimes they have good deals.

 

id check amazon too. they have everything and usually ship stuff asap

 

I found one and the seller accepted my offer. It was tough to find it in my 'small' bore size (d series 75mm~)

 

I have a bunch of the weisco ones. Next time call them and order over the phone


I also make my own too.

Ive made them out of aluminum and delrin

 

Delrin would be cool but I think you would want a certain type. Plain old white delrin likes to sponge up oil and swell. There's a black delrin that has better oil resistance properties but I don't know what its called specifically.

(Used to play paintball, swollen delrin was an issue with some bolts.)

 

I forgot the type of delrin i also used nylon 66

 

Delrin would be a nice cheap option if you had an oddball bore size and/or are only planning on using it once or twice. If you're doing a lot of engines, an Al one is a forever tool.

I have them 81-82.5 kicking around, I never picked one up for the larger bore stuff though.

 

I've definitely decided to use one of these. Anyway, I have a secondary question and I'd rather not start a new thread for such a simple confirmation.

On the top of the piston, it says 0.50. That would be 0.50 overbore, correct? These are stock Honda pistons. I'm fairly confident that this is correct.

 

I thought the OE pistons only came in .25 oversize? Correct me if I'm wrong here.

 

No spAdam, you are right for B-series but wrong for D-series.

B
Honda Automotive Parts

D
Honda Automotive Parts

OP is working on D-series as stated above.

So yes OP, 0.50 is the oversize.

 

Yup, it is a D-series which has a 75.5mm bore (0.50 OS). As long as it is true, I'm in good shape.

0.25mm is small! I'm glad OE 0.50 OS pistons were available, but they don't seem to be available anymore. I'll probably have to go with aftermarket pistons, but OE style.

Thanks everyone. I'm pretty happy with my choices thus far.

 

Copy that, I've never rebuilt a d-series so never knew that.


.25mm is ~.010", which you can usually hone out of the bores. Wonder why the differences, possibly has something to do with the tendencies of wear or the thickness of the walls.

 

OR possibly rod / stroke ratios.

Side loading wears stuff out prematurely requiring more frequent rebuilds. Plus, do we really need to get into the B vs D debate LOL!!!

 

I don't think we are getting into a B/D debate at all! I've never messed with a D-series before this. But I bought a CRX in pretty good condition, but it had high comp pistons. So I'm removing the pistons, rebuilding it as I go, and go with stock pistons.

 

Nah, it was just me being playful and just giving a friendly jest at D-series being designed for more rebuilds... all in fun.

 

I bought myself an 84.5mm wiseco for $42 off ebay.

i have the pliers type, and on the last build as i slid the pistons down, the rings were popping out of the bottom of the sleeve and catching on the cylinders. thats when i decided it was time to get something else.

its awesome to see so many great reviews!

 

If I remember to I'll try and post a pic of the one at my work. It's not the sleeve style though.

 

Once you use a ring compressor like the one pictured in the top photo by the OP, you will throw the one you already own (that looks like the second picture by the OP) in the garbage and never use one of those pieces of junk on anything you care about again !!!

That Wiseco piston ring compressor is awesome !!!

 

I love the tapered ring compressors, they are worth the money, especially if you rebuild engines frequently. A good shop will have a couple drawers full of them.

 

I'm so happy i bought this style compressor, i put my motor together yesterday, and once i had the rings positioned there wasn't any fiddling around with the old style sleeve and ratchet pliers, went much much smoother.

 

I have a hazet ring compressor and no problem to install piston in cylinder. Ive build much 81.00 81.50 82.00 84.00 and 84.50 engine and love my hazet univeral compressor.