Stroker Poll

Tech tips and how to's

Moderators: notoptoy, garth, S Allen

Any interest in gathering stroker data to share with all?

Yes, I will submit information soon.
30
65%
Maybe, let me get back to you.
14
30%
Naw, a big waste of time-move on.
2
4%
 
Total votes: 46

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tjp
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Location: Belleville, WI

Re: Stroker Poll

Post by tjp » Fri Oct 20, 2017 7:02 am

cktrap wrote:Per the rules you must post a price! :smt064
Keith
and also maybe put the post in the "for sale" topic area :roll: :smt006
My junk pile:
71 Jeep J4600 Gladiator. Restored w/#s matching engine. My WeeBeasty.
70 1600 legit 2nd owner. Stroked and bored.
68 1600 parted out
70 2000 parting out
69 2000 parted out
looking for more.

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notoptoy
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Re: Stroker Poll

Post by notoptoy » Fri Oct 20, 2017 8:34 am

Wasn't really looking to sell them, till I was reading the post - seems like exactly what this person needed so I made it available to him here. Did forget to put the price, so I added it.
Then decided to just do it PM so I pulled it - my apologies as I police myself.
"When all else fails, force prevails!" Ummm, we're gonna need a bigger hammer here.

67.5 SPL311 H20 w/5 speed
65 Impala Convertible
2017 C43 AMG

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notoptoy
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Re: Stroker Poll

Post by notoptoy » Fri Oct 20, 2017 8:36 am

cktrap wrote:Per the rules you must post a price! :smt064
Keith
Correct, I pulled it!
"When all else fails, force prevails!" Ummm, we're gonna need a bigger hammer here.

67.5 SPL311 H20 w/5 speed
65 Impala Convertible
2017 C43 AMG

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cktrap
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Re: Stroker Poll

Post by cktrap » Fri Oct 20, 2017 4:09 pm

Sorry I couldn't pass up the opportunity to give you a hard time.
Just saying
Keith
:lol:
'70 SRL311
'10 GMC 2500HD

70-1600
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Location: San Jose, CA

Re: Stroker Poll

Post by 70-1600 » Fri Aug 31, 2018 3:59 pm

Re-visiting this subject...I picked up an H20 NISMO crank recently (brand new in the box!). In researching various posts in this poll and other areas of the 311s site, I see comments about cams as part of an R16 stroker project. Many mention choosing a mild "street cam" as part of their projects. Dean has this offering "Performance #3 - R16 motor & 2000 Push rod Stroker - 430 Lift at the valve / 276 Duration. Order by PART#1497ACS". Some threads suggest lift and duration ranges for a good "street cam", and this one falls right in there. Anyone use this cam (or something similar) in their builds, and what was your experience?

-jt

greydog
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Re: Stroker Poll

Post by greydog » Fri Aug 31, 2018 5:42 pm

Congrats on the find.
Regarding the cam....
My understanding is that the cam is part of the whole. In other words, intake, compression, exhaust, intended useage, gearing are all parts of the program as well as idle charistics and your expectations for how the engine is to perform.
A lumpy idle and poor off idle performance with strong pull from 5500 to 7500 might be fine for some but, obviously not others.
Trust me, I'm an old guy who has run hi lift long duration/overlap cams in V8 street cars....not fun.

For starters, what piston/rods are you planning on running? Are you going to use a stock head or maybe you've got one that's been cut too far to use on an R16? What trans will you use and what rear end? Are you autocorssing the car or is an occasional driver? Webers or SUs?

Dan
.68 SRL311 aka "Skortch". On the road again.
'69 SPL311 aka "Scooter" terrorizing the streets
1990 Nissan 300ZX
2008 VW GTI
2017 VW Passat

70-1600
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Re: Stroker Poll

Post by 70-1600 » Fri Aug 31, 2018 7:11 pm

Greydog -

Piston/rods - planned to go with U20 flat tops at the moment.
Stock R16 head - will have to get a read on the height of it; I had the current R16 re-built about 18 years ago and I don't believe they cut it, just new valve seats, guides, seals.
Tranny - currently have the 1600 4-speed...considering a U20 5-speed, if I could get my hands on one. I know...if I've got the engine out swap the tranny at the same time, and the clutch...a slippery slope there.
Rear end - my stock R16; no plans there
Autocrossing or occasional driver - definitely an occasional driver....no autocross or track in mind.
Webers or SUs - currently my stock R16 SUs...but the Webers are a possibility.

Now the other items on the list of "probably will do"...EI dizzy (East Coast Roadsters), ceramic R16 header, 2" exhaust.

The R16 is running great (only a few thousand miles since the re-build). Just looking to kick up the HP and torque and get a bit more zip into the driving experience, and I'm sure a "mild-mannered" stroker will do that for me.

-jt

greydog
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Re: Stroker Poll

Post by greydog » Fri Aug 31, 2018 10:32 pm

OK. My understanding is that head/piston/rod combo gives 9.6 or so compression.
Youll need to move quite a bit more air/fuel thru the carbs. If it were me, Id go with the cam you are looking at. Id also lighten the flywheel and talk to one of the carb guys about needles for the carbs. Id port match the head but not do any work on the ports or combustion chamber unless theres an obvious rough spot and then only to smooth, not reshape.
Im sure others with more experience than I will offer input too.
You will be happy with the torque bump as much as the hp gain.
Have fun.
Dan
.68 SRL311 aka "Skortch". On the road again.
'69 SPL311 aka "Scooter" terrorizing the streets
1990 Nissan 300ZX
2008 VW GTI
2017 VW Passat

baxtersit
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Re: Stroker Poll

Post by baxtersit » Tue Sep 25, 2018 7:01 pm

66 Roadster, 119,000

H20 block (skimmed .050), crank, rods and pistons
Mildly ported Al head but down to 3.20 inches, ARP head bolts
Ported Intake for Weber DCOEs, foam filters, phenolic spacers and home made heat shield
Without the spacers and heat shield, the fuel boiled in the float bowls. Car still has a faint gas smell.
150 MJ, 165 air jet, pump jet 40, idle jet F9 40, idles about 1300 Timing is 32 BTDC
Electric fuel pump 3psi
American Cams M13, 276 duration, 216@.050, 430 lift
2000 oil pump
Wrapped tubular headers to 2.5 inch exhaust
East Coast dizzy and Blaster 2 coil

Runs much stronger than the 1600 with a lot more torque. Webers were a big challenge but very close now with nice light tan plugs
Just got back a rebuilt 5 speed but that will be a winter makeover
Thinking of the JT68 valves and springs to raise the rev limit.
After all that, no more!