Other DASA 89mm vs. 94mm......Opinions??

[tipafew]

I am looking at having a motor built. I know DASA currently makes a cylinder that is good for 89,89.5,90,90.5,91 mm bores. They also make a bigger bore 94mm/95mm sleeve.
I will probably be doing a 4mm or 5mm stroker. Debating whether to do the smaller bore cylinder so I can have more rebuilds or go for the bigger bore and have the power.....

Thoughts?

 

[Big Kahuna]

How about their Stock Stroke 89mm Superbore. I looked at that a few months back.........

 

[js/sj]

5mil long rod motor with 94mm pistons would be a killer setup. Make sure you get longrods on that 5mil crank though. Less stress on the pistons etc.

 

[tipafew]

Are you talking about something other than their billet SS PV motors?

How about their Stock Stroke 89mm Superbore. I looked at that a few months back.........

 

[Big Kahuna]

nope. Good Old Stock Stroke Cranks.......... AKA Non Stroker!

 

[Schmidty721]

If you're thinking about a 4mm engine, I'd take a look at the Power House Performance setup.

http://phpski.com/

 

[FearMyWrX]

^^ It would be nice to hear what a couple more people think about these. Theres a couple guys that are so pumped up on these engines its almost quite humorous.

Their prices are similar to those that Nuklear6 charges for his ~900cc 4 mil dasa stroker.

 

[DAG]

I was less than impressed with dasa's 94mm setup. Cost me a full season of riding

 

[waterfreak]

I was less than impressed with dasa's 94mm setup. Cost me a full season of riding

please elaborate! I am very interested in this set up myself. Was it stock stroke? , 4 mil?

 

[tipafew]

I looked at the Powerhouse Performance......Was leaning toward Dasa just because it has been around longer and is more proven. Would love to ride them both or at the very least get more feedback.
Thought about a longer stroke but $$$$ comes into play.

At 4mm I would think stock length rods would be okay for longevity and wear right? I am also trying to keep a reliable motor that I'm not tearing down all the time for top ends.

 

[Lucaumpits]

Brian builded Josh a lil Dasa 4mm 900cc on his last surf ski, it was amazing,
thats what Im getting for my build

 

[FearMyWrX]

I looked at the Powerhouse Performance......Was leaning toward Dasa just because it has been around longer and is more proven. Would love to ride them both or at the very least get more feedback.
Thought about a longer stroke but $$$$ comes into play.

At 4mm I would think stock length rods would be okay for longevity and wear right? I am also trying to keep a reliable motor that I'm not tearing down all the time for top ends.

I wouldn't go over 4 mil if you just want to ride and go and not have to worry about service intervals.

Nuklear6 said;
Honestly anything over +4mm stroke (72mm) should prob be left for competition or SERIOUS hobbyist. Service intervals just get to intense when going anything above +4.

 

[Matt_E]

I'm not sure that's applicable to each and every stroker engine out there. I just tore my +10mm stroker down after one full season of riding, about 250 gallons through the topend.
Other than some wear from water intrusion on the pistons, the engine looks brand-new. I sent it to Art to inspect and he agreed.

 

[FearMyWrX]

Im no engine expert or guru, but though there is always the exception. It must be because you broke your engine in on synthetic lol! You must admit the higher the stroke and higher the compression the higher the service intervals are going to be generally speaking. As in, I wouldn't recommend an 10mil for someone that is looking for a maintenance free engine.

 

[Matt_E]

Im no engine expert or guru, but though there is always the exception. It must be because you broke your engine in on synthetic lol! You must admit the higher the stroke and higher the compression the higher the service intervals are going to be.

Theoretically.
This engine looks better after a season of riding than any of my previous engines. (But I am also a lot more anal about oil quality and ratios, being careful with it, and giving it maintenance when it needs it.)

 

[FearMyWrX]

We should take this back to the "how to break in an engine" thread.

 

[tipafew]

Art was going to put some options together for me but I haven't heard back.

 

[powerhouseperformance]

I'm not sure that's applicable to each and every stroker engine out there. I just tore my +10mm stroker down after one full season of riding, about 250 gallons through the topend.
Other than some wear from water intrusion on the pistons, the engine looks brand-new. I sent it to Art to inspect and he agreed.

That is because you dont have stock legth rods. 4mil is max for 125mm rods for good longevity.

 

[tipafew]

That is because you dont have stock legth rods. 4mil is max for 125mm rods for good longevity.

Will the 4 mil 125mm rods affect longevity much vs. stock stroke?

 

[powerhouseperformance]

Not bad enough to worry on an engine that won't see sustained wot runs. If you were bouy racing your boat I would say not a good choice. Short rod motors actually accelerate or rev up quicker than long rod ones. It's the main reason honda went from the hard hitting 139mm rod cr500 motor of the mid 80's to the 144m rod later years motor. Both engines ran the same 79mm stroke, but the power delivery of the 139mm rod motor was way more violent (like what we all are looking for). The long rod motors were way smoother and easier for mere mortals to ride...for a 500 that is