Stroker kit

supra90turbo

shaeff is FTMFW!
Mar 30, 2005
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I have a question for either Adjuster or Figgie, or both of you.

I know that adjuster, you said just above that if you could do it again, you'd go LS3 V8 TT, but would you recommend the flatlander kit despite the troubles you've encountered? same with you, figgie?
I wouldn't mind destroking the 7M and making some nice high RPM's, but on the same token, I wouldn't mind stump-pulling torque.

Ideas, insight, information?

Thanks
 

Adjuster

Supramania Contributor
Here is what you need. (NO Phil at Flatlander needed, or there to overcharge your credit card, and then tell you it's not his problem....)

Crank is a custom modified stock one from Crankshaftspecialist.com out of TN. Very nice folks to deal with, tell them Greg says "Hi" when you call to order your crank. (My hard chrome repairs have worked great thus far....)
What you do is send them your stock 6M or 7M crank, and ask them to increase the stroke by 6.5MM and regrind the rod journals to the same size as a stock 327sbc. (Easy to source bearings, and since they are slightly smaller than the stock 7M sized bearings, the journals are smaller, leaving more room inside the engine for the stroke you just added.)
Ok, time to order up the rods. Call Pauter, and then ask them for the following.
6" long rods.
327 Small block Chevy rod size with HONDA pin size on the small end.
Then call ROSS or JE. (Your choice, but those lighter coated JE pistons are looking mighty fine in my opinion, and if I have to replace the pistons at any time going forward, I'll use them v/s the ROSS ones I have now.) You need to explain your needs, that you want HONDA upgraded pins because they are smaller in diameter and thus lighter, and allow you to push the pin bore up closer to the crown as a result. You need to give them your engine information so they can calculate the pin bore to crown height so your pistons have the right CR. (I reccomend 9:1, but that's only if your going to coat them, and the head with a thermal barrier to limit the chance of melting them down.)
Ok, so now you have to machine your block to clear the rods as they spin around inside there. Your going to need to clearance the oil pump mount quite bit, some of the inner rails, and the edges of all the piston bores, or the shoulders of the rods will hit the bottem of the bores... All of this costs money, and it takes time and a mill, or a steady hand with a grinder. (We used a mill, and ended up doing two blocks, so I belive there is a block ready to go as a stroker here in boise if anyone's interested....)

So, to assemble your short block, you will get your modifed stock crank back, and your custom rods and pistons. You need to hang one piston without rings, and after the engine has been bored out to the right size for that piston, start checking for clearance on all the places each rod/piston can hit. Don't forget to clearance your oil pump drive shaft. Mine barely hit the rod shoulder, so it had to be turned in a lathe for clearance.

There is very little left of the oil pump mount, and you even have to remove some material from the oil pump. (Since I had access to a mill, and we were feeling crazy anyway, we totally modified the oil pump outlet to a larger size AN10, and I changed the block oil system so it's external filter/cooler only. You can't just spin on a filter anymore as we plugged the galley feed to the filter boss, and just exited the block a the NA cooler bypass fitting. See the attached photos.)

So, can you do another stroker? Or could you support ASSHOLES like Phil/Flatlander, and buy stuff already assembled by his shop? Sure, but it's not cheap either way. Personally I'm never doing business with Phil again, but it's your money.

p244429_1.jpg

p244429_2.jpg

p244429_3.jpg

p244429_4.jpg
 

Nick M

Black Rifles Matter
Sep 9, 2005
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supra90turbo said:
I wouldn't mind destroking the 7M and making some nice high RPM's, but on the same token, I wouldn't mind stump-pulling torque.
I would just go 1JZ before I destroked a 7M.

No, the world is not ending.
 

Stretch

Tallest MK3 driver ever!!
Mar 30, 2005
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Hey adjuster, could you do away with modifying the oil pump stuff if you just went to a drysump setup instead? Would that make it a lot simpler, not saying drysump is easy breezy just saying you wouldn't have to modify the pump or mount or anything?
eric
 

Adjuster

Supramania Contributor
Well, that's my point.
If I was going to do this, and all I wanted was more displacement, there are MANY other choices that would be about the same money in the long run, and yeild even more power potential. (IE the small V8 force fed on some Masterpower turbo's... )

You can get a 7L small V8 pretty easy now, and with two 550.00 turbo's from Ebay, the manifolds also from Ebay, and your choice of fuel computer that will work with forced induction V8's, your up and running with a bell housing change so the R154 will bolt up to the SBC. (Those amazing aussies have just the part IIRC, so you can bolt up V8's into the Toyota pickup trucks that just happen to use our same R150 based Asin transmissions.)

So, mild 7.0L V8 with gobs of low end power, and way more top end power than any of us will ever need, and your price of admision? Somewhere near, or possiby less than other alternatives, especially when your dealing with a realatively new setup that has not been tested much, or pushed very hard yet. (That I know of anyway. I'm working on the pushing now... LOL)

On the dry sump question, you would spend another 600 to 1000 on parts and a custom oil pan. (Even if you just sumped the stock one, and ran an external pump, where are you going to place the pump, and where on the pan do you want to place the multiple pick up points to scavange the oil out of that pan? Also where are you going to place your "tank" of oil? There is limited space under the hood.) I ended up going with an accusump 3qt remote tank, and all the fittings and hoses to get the oil out of the motor, through the filter, cooler and split between the accusump and the engine. Here is where I mounted my "sump" of reserve oil. (And I pre-lube the engine before I start it up, so there is as little dry start wear as possible.) As it is, I'm into my oil system over 1500.00 now, and that's using the stock type pump. (Those AN10 fittings and hose are not cheap, also the Canton filter, controls for the Accusump, and the parts etc. This is not counting labor either. The 600 to 1000 is OVER and above what I've spent already, and I'm not sure that ultimately it would work all that much better really.)

p244546_1.jpg
 
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Adjuster

Supramania Contributor
Yes, if you look close, you can see the shiny metal where it is cut down slightly more than stock. (The stock one is cut out, but you need to make those cut out, or machined down areas wider than stock, and slightly deeper than stock to get the Pauter rods to clear.)

Any more stroke, and the oil pump drive would have to go, or be replaced, ore re-designed to clear.

Look closely at the first pic. You can see where the material is removed on the pump drive shaft in two places where the rod shoulders have to clear it.
 

supra90turbo

shaeff is FTMFW!
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Thank you guys for the answers. Greg, I knew I could count on you for the long winded answer ;)
Nick: Take that back, I can feel the earth slowing down!

Allan: It's true ;)