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Simply Volvo

Simply T-5R, The Build Thread : A New Hope

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10 hours ago, Andzey said:

The RNC whiteblocks with 93.2 crank got tight ring pack pistons yet 143mm rods. I doubt there exists such a piston geometry allowing both 93.2 crank and 147mm rods. Unless you apply a block plate over the liners. 

JE said it was no problem.

Pistons have been ordered.

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1 hour ago, Simply Volvo said:

JE said it was no problem.

Pistons have been ordered.

Awesome. Happy to see you’re still plugging away on this project Matt.

What pistons did you order? Does JE offer an FSR piston for our engines? 

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4 hours ago, andyb5 said:

Awesome. Happy to see you’re still plugging away on this project Matt.

What pistons did you order? Does JE offer an FSR piston for our engines? 

I ordered custom ones. They don't have any off the shelf ones.

84MM bore, 10:1 compression, 93.2mm crank, 147mm rods, FSR Asymmetrical design with "tough skirt" coating.

They should be some pretty bad ALL GLORY TO THE HYPNOTOAD pistons.

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6 minutes ago, Simply Volvo said:

They should be some pretty bad ALL GLORY TO THE HYPNOTOAD pistons.

Ah yes, my favourite kind of piston :D 

Stoked for you on this rebuild

Edited by sventastic
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For those interested in specs for ordering custom pistons.

Deck Clerance : -0.4mm (above)

MLS head gasket thickness : 1.3mm

MLS head gasket bore : 84mm

Composite head gasket thickness : 1.5mm

N Head Combustion Chamber Size : 51cc

Valve Free Drop Lift : 2.15mm

Block Height : 220mm

N Piston Skirt Length : 58mm

R Piston Skirt Length : 52mm (went with this)

Below is 84mm, 93.2 crank, 147mm rods (21mm SE), 10:1 compression. FSR with tuff skirt.

Part Information

Motor Type VOLVO   Head Type VOLVO   Block Type MISC
Piston Type Dish - Flat Bottom   Induction Method Gasoline Turbo Charged   Bore 3.3070
Compression Dist 1.055   Net Volume -1.32   Land Width Top .250
Land Width Mid .160   Land Width Bot .090   Groove Width Top .040
Groove Width Mid .048   Groove Width Bot .141   Bot Groove Dia 3.005
Mid Groove Dia 2.983   Top Groove Dia 3.009   Accumulator Groove Y
OD Finish Turn Bot Dia 3.3028   Cam Type intercooler   Pin Hole Dia .827
Pin Length 2.050   Lock Type Code JE Wire .050   Dish or Inv Dome .015
Mill Pin Boss Width .95   Pin Fit .8273   Tuff Skirt Y
Edited by Simply Volvo
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Awesome! How much to they charge for a set of such full custom pistons? I suppose they are fabricated from a forged builk, not casted. Do you know where are they made? 

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7 hours ago, Andzey said:

Awesome! How much to they charge for a set of such full custom pistons? I suppose they are fabricated from a forged builk, not casted. Do you know where are they made? 

Here was the price break down on mine

Job Part Information

Part Number Description Ordered Unit Price Extended Tax
360421 3.3070 VOLVO MISC 5 124.51 622.55  
827-2050-21-93C JE STRAIGHT WALL PIN 5 21.76 108.80  
827-050-MW WIRE LOCK 10 1.36 13.60  
3346-122 OIL RAIL SUPPORT 5 4.18 20.90  
  PIN FIT 5 4.25 21.25  
JG1005-3307 1.0-1.2-2.8-84.00 1 103.65 103.65  
PistonFeature FSR 5 16.00 80.00  
Service TUFF SKIRT 5 17.00 85.00  
PistonFeature ACCUM GROOVE 5 2.75 13.75  
Service EXPEDITE FEE 1 164.00 164.00  
      Total: 1233.50  
  Shipping Not Included     Grand Total: 1233.50

 

For what im getting, extremely reasonable. If you remove the FSR design, skirt coating and 7 day expedited cost, your coming in around $900. Pretty close to wiseco and IMO waaaaayyyyyy better quality.

The pistons are forged and all forgings and cnc machining is done in house in california.

Definitely a highly under looked piston option for our cars.

 

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just read up on that skirt coating - pretty neat 

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Sounds way better than average engine build here. What rods are intended? Also where are you going to order those 84mm piston rings? Will you trust manufacturer tolerances or gap them by yourself? Anyway you must decide how much gap do you want..

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11 hours ago, VulvaS40T4 said:

We use also only JE pistons in our high power white block engines. :) 700-1000hp 4-5cyl. ;)

Yeah I saw you and Sute were running them and figured I would give them a try. Their customer service is unbelievable. I must've talked to the guy for 30-45 minutes making sure I had everything right.

3 hours ago, Andzey said:

Sounds way better than average engine build here. What rods are intended? Also where are you going to order those 84mm piston rings? Will you trust manufacturer tolerances or gap them by yourself? Anyway you must decide how much gap do you want..

Going with 147mm 21mm rods. Just gonna use the CXRacing ones. I've never heard of issues with china rods failing (just need to make sure they are within spec and hone if necessary).

Rings are included in that price break out table. I thought they weren't at first but they are:

JG1005-3307 1.0-1.2-2.8-84.00 1 103.65 103.65  

This is a ring set (quantity 5) that already exists as a JE part number. Its the JE Pro Seal that they include with most of their pistons. I assume it was created when sute ordered this 84mm pistons (or someone else).

I'll defeintely gap the rings myself... that is a given in an engine build. You never just throw the rings in.

I'll probably go a little loose on the ring end gaps. I believe last time I went .018" and .022"

Ill probably do whatever JE recommends and grind them with a proper ring end gap grinding tool.

 

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Ouu, right... I should guess that... 

watched the videos, those frogs in the background were always amazing

@Simply Volvo, could you explain couple things please..

1) that RNC oil pump. Do you think RN pump lacks performance, or you are going different oil viscosity? Have you also considered T6 oil pump or maybe even examined one? Since T6 has additional section, the pump gears should have more volume

2) How did you prep the block before painting and assembly? Soda blast, ultrasonic bath or something else?

3) What CR do you finally achieved?  If more than 10:1 what are the plans avoiding detonation at full boost? 

4) Doesnt Glyco offer also sputtered main bearings? Maybe you can put some link or description of that coating..

5) What are final torq values for ARP crank case studs? Why dont you use any thread grease under the nuts? 

6) what was the compression ring gap out of box before you started gaping them?  overlapping in the cylinder liner?

 7) Did you copper sprayed the OEM MLS HG and them put RTV silicone over the copper spray? Aint this weird in terms of adhesion? IIRC MLS goes clean to bare metal, aint? 

Edited by Andzey

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Well, it’s been quite a while but this thread and project has not been forgotten.

I finished up my masters degree in computer science last week and am on a much needed vacation. If your curious you can read about my thesis here https://web.wpi.edu/Pubs/ETD/Available/etd-121418-102453/ the link to the full write up is at the bottom.

Starting work soon and will finally have 12/12 months of the year to work on this car instead of 3/12 like I’ve had for the past 5 years while I was working on my bachelors and masters.

@Andzey I will respond to all of your questions in the next few days.

~Matt

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