HPE 4mil "bolt in" stroker kit

[holeshot]

New HPE 4mil long rod "bolt in" stroker kit. This kit comes with an ADR/HPE exclusive 72mm stroker crank built with 133 rods, HPE billet stroker baseplate in your choice of color (red or blue anodized, and machined aluminum), HPE stroker domes with Orings for ADA heads, extended dowel pins, new pin bearings, OEM crank seals, and 3 base gaskets in different thickness for fine tuning your squish.

This kit is set up to keep port timing correct, you will gain power right off idle up to peak rpm. The long rod and stroker baseplate combo work together to increase crankcase pumping efficiency, torque and hp. Available for 701 and 760 bores from 81mm to 86mm.

The kit price is $895 as shown
Call or txt HPE @ 714 931-3860

 

[Roseand]

Game changer right here! Congrats on the release. You've been excited about these for a long time!

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[holeshot]

Finally a bolt in, no machining stroker kit with corrected port timing. Im running one in my B1 and it rips

 

[jdmforlife]

Great things coming from out from HPE awesome bolt in setup...

 

[Quinc]

Same price as bpipe!

 

[holeshot]

More coming now that im in the new shop.

 

[Quinc]

@chucktor @squirtis701 @Cole__kelly We need this!

 

[SmittySX]

Very cool. Ill definitely be getting one.

 

[sneds]

@jetx

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[holeshot]

Very cool. Ill definitely be getting one.

Thanks smitty i appreciate you bud

 

[Christian_83]

Nice, whats the difference running a 133mm rod versus a 125mm rod, on the same setup (lets assume the 72mm stroke as advertised) ?
Very nice option to get good bang for your buck!

 

[Lumpy]

Less rod angle and side loading on your pistons.

 

[Roseand]

And corrected port timing

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[holeshot]

Nice, whats the difference running a 133mm rod versus a 125mm rod, on the same setup (lets assume the 72mm stroke as advertised) ?
Very nice option to get good bang for your buck!

 

[holeshot]

The long rod allows me to adjust cylinder height without machining, with a 125 rod port timing would be incorrect. The long rod and spacer plate combo lifts the cylinder so the sleeve is not hanging down into the intake port or obstructing transfer flow. The long rod dwells longer at tdc and dwells less at bdc, this can have a positive effect on crankcase pumping. This combo also slightly increases crankcase volume and that can reduce pumping losses and gain low to mid.
The short rod combo does work and it can work well too. But machining is required to the case top or cyl base to correct port timing, and the advantages listed above are not part of a short rod set up.
Its true that the long rod can reduce side load on the piston but its hard to say if this is an added advantage. A short rod can reach a good rod angle sooner in the stroke than a long rod and that can be an advantage possibly, just not sure if its a measureable advantage in this instance.

 

[speedysprocket]

So is that just a Polaris rod you use...?


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[MTRHEAD]

Polaris rods are 136mm long and use a big pin (22mm) on the piston end. These appear to be Kawasaki small pin by ADR

 

[EddieGigoWatts]

Nice well put together stroker kit
So a 701=?
And a 760=?
Matt do you think a single 48
Would Work with a 760 cylinder .
Been running a single 46 on my 760
For almost 2 years

 

[holeshot]

Yes it will work. I cant say that ive done alot of single carb testing in 62t cases so i dont have alot of feedback to share.

 

[holeshot]

Ill make a list of bore to stroke total displacement and post it shortly