refresh951

Starting this thread to get a handle on who is doing a Hybrid Stroker (DIY Guide) and also to have a place for general discussions as well as lessons learned.

Completed:

1. Blown 944 - 2.85L, 86mm Stroke, 102mm bore, 2.5L Dry Sleeved Block See Here
2. Refresh951, 2.85L, 86mm Stroke, 102mm bore, 2.5L Dry Sleeved Block See Here See Here
3. Duke, 3.1L, 91mm Stroke, 104.28mm bore, 16V, Dry Sump, 968 Dry sleeved block See Here
3. Refresh951, 3.12L, 94.75 mm Stroke, 102mm bore. 2.5L Dry Sleeved Block See Here
4. Blown 944, 3.0L, 86mm Stroke, 105.5 bore, 2.5L block Dry Sleeved Block, Deck plate, over 100 passes, 5000 miles See Here
5. Dave W., 2.85L, 86mm Stroke, 102mm bore, 2.5L Dry Sleeved Block See Here

In Progress:
1. URG8RB8, 3.?,
2. Will Feather, 3.3L, 94.75mm Stroke, 105.6mm bore
3. Dougs951S, 2.9L, 86mm Stroke, 4.06" bore, 16V
4. Dizzyj, 3.3L, 94.75mm stroke, 4.124" bore, 8v 2.7 head. 3l pinned block

refresh951

I have heard of some motors in progress. Any details on these builds?

blown 944

In progress: Blown 944; 3.0 105.5 bore 86mm stroke. 16v (for the moment, might change my mind)

I can't comment on others done. I do know of a couple others in progress, including a crazy build!!!

Reimu

So what made blown's 2.85l non interference and refresh's 2.85l interference?

At least I think I remember it being that way

blown 944

Different pistons.

refresh951

Registry updates?

Will Feather

Perhaps can throw me done on in progress... it will be slow.. but it will be progress.

Will Feather, 3.32, 94.75 mm Stroke, 105.6mm bore

V2Rocket

I intend to go down this road fairly soon, I have the base parts already.
2.5 crank with nuked rod bearings for grinding, and a sleeved block needing cleanup.

I anticipate a 4.010" bore (sleeves in the block are about 3/32" thick so not much more room without resleeving) and and 85mm stroke with the parts I have.

Should work out to 2.75-2.8L or so depending how much stroke I can get from this crank.

JacRyann

I saw somewhere that Dave W. is working on one? Has that project been completed?

blown 944

Dave W has had it done for awhile.

Mine is now a 3.0. 105.5 bore, 86mm stroke. Over 100 passes and around 5000 miles. Now.

Should also see Duke, Eric, and a few others in this thread.

refresh951

Updated with thread links. More updates?

Dougs951S

In progress--- 2.9 liter 16v, motor is on the stand and currently looking for a shop to send the crank to.

here are the dimensions:
85.5 N/A block decked to 9.03", steel sleeved and bored to 4.060"
86mm stroke (hopefully)
5.9" mitsubishi rods
ACL race bearings
Stock 16v head and cams, 42cc chambers
.040 cometic gasket
-9.8cc dished pistons, 1.260 pin height

.177" deck
8.4:1 compression
1.74:1 rod ratio
16.68 max rod angle

air will be provided by an HX35 super turbo mated to a .63 T3 hotside, hoping for ~450 rwhp. Motor should be fully non interference. Is mine the only 16v hybrid stroker besides Duke's so far? My build actually started out as just a simple 16v conversion, but at that point it didnt make sense to not add displacement.

refresh951

Updated. Cool project.

dizzyj

in progress
3.3l 4.124" bore 94.75mm stroke, 8v 2.7 head. 3l pinned block

Dougs951S

Just an update, plans have slightly changed. My stroker build is going to use different pistons, I will most likely be running a 4.040", 1.425 pin height piston, -31cc dishes. With a 9.050" deck, this gives me .032" deck clearance with a .040 gasket. 9.1:1 compression (nominal). These pistons should give much more favorable quench than the previous pistons, I decided after my recent motor explosion that I didnt want to be experimenting with running a massive .18" deck on my next build. This motor should still be non-interference with some machining to the pistons faces, and will be 2.84 liters. I'm shooting for 9.0:1 CR but it will probably be a bit lower after valve relieving.

I have another set of JE pistons picked out also, same compression height and same -31cc dish volume but for a 4.030 bore. Whether I ultimately go with a 4.040 bore or 4.030 sort of depends on how much material is available on the sleeves.