Author Topic: 2.7L Stroker  (Read 2002 times)

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Offline Jeffy

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2.7L Stroker
« on: March 05, 2013, 02:12:44 PM »
Saw this when going though ebay.

http://www.ebay.com/itm/360605674871?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

Titan 2.7 L 4 Cylinder Jeep Stroker Engine
 
 
Titan 4 Inch Bore Pistons
Hastings Ductile Moly Rings
Titan Offset Ground  Stroker Crankshaft
King Rod Bearings
King Main Bearings
King Cam Bearings
Victor Gaskets with MLS Head Gasket
Crane Custom Grind .456/.484 204/216 @ 050 Duration Camshaft
Stainless Steel 1.94 Intake Valves
Stainless Steel 1.50 Exhaust Valves
ERV943X Valve Springs
Aftermarket Retainers
.050 Off Set Keepers
Melling 3-SR48 Timing Set
Melling M81A Oil Pump
High Strength Cylinder Sleeves
 
The Cylinder Head is machined for 1.94 1.50 Valves and proper stem height.
 
The top of the head is machined for Spring Pockets to achieve proper seat pressure.
 
The Block has been sleeved with high strength sleeves and then bored and final honed
to get the largest bore and keep the engine block as strong as when new.
 
The crankshaft is offset ground to increase the stroke as much as we safely can.
 
 
 
 
 
 

1. The first step is to disassemble the core engine and visually inspect the Cylinder Block, Crank Shaft and Cylinder Head castings. If they pass this step they move on to the next step the Thermal Cleaning.
 
2. Thermal Cleaning in this step the disassembled Cylinder Heads and Block Castings go through the first cleaning step in which they are heated in a flameless oxygen depleted enviroment to 650 degrees to prevent cracking or warping while burning off sludge, carbon and oil residue.
 
3. In this step the Cylinder Head and Block Castings are sent to a Steel Shot Blast Machine where they are blasted with Stainless Steel Shot pellets that leave a like new finish on all surfaces of the Cylinder Head and Block castings and stress relieves the castings.
 
4. Now we magniflux the Cylinder Head and Cylinder Block castings to insure no cracks or casting faults went unnoticed.
 
5. Block Preparation in this step we remove any broken bolts and chase all threaded holes, if any problems are found they are repaired at this point. All Oil Galleys and passage ways are brushed clean and the Cylinder Head castings and Blocks are sent back to cleaning.
 
6. The Block and Cylinder Head castings now receive a high pressure wash in a Pressure Wash Cabinet that removes any particals from the earlier steps.
 
7. Line Hone in this step the main bearing bores are align honed which insures proper main bearing journal size and alignment.
 
8. The Cylinder Block is now sleeved and bored to within .002 using a Rottler Boring Bar to insure all cylinders are a consistent size.
 
9. We deck the Block using Rottler milling machine equipped with CBN cutters to insure a superior head gasket sealing surface.
 
10. Now we hone the cylinders to the final bore size and finish using a Sunnen power hone.
 
11. The engine block goes back to cleaning receives a final wash, is put on a engine stand and sent to assembly
 
12. Cylinder heads receive a 5 angle valve job using a Serdi seat machine, surfaced and assembled.
 
13. Custom Offset Grinding the Crankshaft
 
14. We resize the connecting rods on a Sunnen rod machine to exact size and fit the pistons to them.
 
15. The engine is now assembled using the highest quality components by highly skilled craftsmen taking utmost care assembling the engine.
 
16. After assembly the engine is sent to Quality Control where the engine is run on a Sim Test Machine where we check the engine for compression, oil pressure, valve adjustment and drag.
 
17. The engine is painted and given a final inspection.
 
18. The engine is now shrink wrapped, palletized and made ready for shipment.
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Offline Tr00b

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Re: 2.7L Stroker
« Reply #1 on: March 05, 2013, 07:43:55 PM »
I wonder what sort of increases over stock could be expected n/a to make it worth the $?

mrdeath2000

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Re: 2.7L Stroker
« Reply #2 on: March 06, 2013, 10:24:00 AM »
About $1000-$1500 over a normal rebuilt one on ebay.

The option is nice, maybe more will pop up and help the price some.  I'd rather see more of them offer/include roller rockers instead.   I know there is one aussie company that makes some, but I wonder if there are other ones that are cross compatible, cause ~$450 for roller rockers is steep.

1350 +450core +free ship 7yr/70,000
http://www.ebay.com/itm/1994-JEEP-WRANGLER-ENGINE-94-2-5-L-150-L4-GAS-REBUILT-/250524450626?pt=Motors_Car_Truck_Parts_Accessories&hash=item3a546bbf42&vxp=mtr

1700 +350core +free ship 3yr/100,000
http://www.ebay.com/itm/NEW-REMAN-JEEP-WRANGLER-CHEROKEE-COMMANCHE-2-5-LITER-ENGINE-1991-1996-/290665889889?pt=Motors_Car_Truck_Parts_Accessories&hash=item43ad098061&vxp=mtr

1282 +350core +freight shipping charges   3yr/36,000
http://www.ebay.com/itm/Jeep-Wrangler-Cherokee-Long-Block-Engine-2-5-150-1983-1995-/140830681782?pt=Motors_Car_Truck_Parts_Accessories&hash=item20ca29aab6&vxp=mtr


Read the warrantys, cause they're limited usually and only really cover about half the time, the rest is like 50% labor or something.

Offline RNandKT

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Re: 2.7L Stroker
« Reply #3 on: March 06, 2013, 09:32:20 PM »
Funny the last one you listed "1282 +350core +freight shipping charges   3yr/36,000" is reman by the same company doing the stroker.

It doesn't sound like that great of a deal since 505's 2.9 stroker kit is only ~$1700. Even if you had a shop do all the machine work and assembly/disassembly labor, it would not come to $1000. But then again the 505 kit does not re-sleeve the cylinder, that and the milder build I imagine the longevity on the Titan motor may be better?

Be interesting to see their numbers though in the ebay auction it just says "More torque and Horspower." 505 Performance claims 45% increase in HP and 50% Torque. That puts numbers around 180-190 HP and about 200 ft/lbs. Basically 6cyl territory but minus the weight. I'm betting the 2.7 is prolly somewhere in the middle between that and stock rebuild.

Offline sharpxmen

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Re: 2.7L Stroker
« Reply #4 on: March 06, 2013, 11:17:43 PM »
not sure how you get 45% more power with only 16% increase in displacement
with a cam maybe, but in that case it means you can get about 30% increase with just the cam so imo I'd rather do that and get roller rockers and maybe do some work on the cyl head instead of spending that much on a stroker.
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Offline RNandKT

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Re: 2.7L Stroker
« Reply #5 on: March 06, 2013, 11:38:56 PM »
I only list the numbers they state. I am guessing it is not just the increase in displacement as much as it is a combination of performance changes. The hotter cam, longer stroke, increased compression ratio, and so on. All in all it's a fairly inclusive kit, and is probably a little less than a 6 cylinder swap. Though I am guessing it would not take 100K miles of abuse like a stock motor would.

http://www.shop.505performance.com/category.sc?categoryId=40

Some of the PRO's run this kit because being under a 3.0 liter gets them into the lower category for off-road racing, but I personally do not know anyone running it. Just what info I can Google.