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tinman22

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I am mulling over engine options for a new motor. I am thinking about a venture1300 build is there a better set of cases/ liners or are they all the same?

1-1.5 mm bore is all i need a 1327-1344 motor would work. Will the venture tolerate a 1.5 bore?
 

tinman22

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well back to the vmax block. i had read in another post with a spread sheet for a 1-1.5 mm max bore with stock sleeves and thought that would be a cheaper way to get into the 13+ range than resleeving and boring a 1200 block.

I did see that the oem max overbore piston is .50mm. so the best i could do with a 1300 block would be 1310 with 12ish comp? Not really a wise expenditure of funds.

thanks for the response.
 

sandy klock

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A 80mm bore is acceptable in the venture and I believe PCW does go 81 on them. Ck with John. A few people on this forum in the past have run 1327,s on stock sleeves if my memory isn't failing me.
 

tinman22

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yeah. i can't seem to nail down a bore answer. I had come across an old set of build lists, not really sure where it came from originally. 1344 would work. I can get a 1300 motor running for $150 so that would make sense. If i can't and I need sleeves..well there is no replacement for displacement.

im glad i didn't buy pistons yet.FC1CBCA5-DFBC-4D6A-8BF3-88E6DFC07C5B.jpeg
 

sandy klock

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If I remember correctly the reason for limit on piston dia. was liners warping if wall thickness was too thin. Let us know what ya find out.
 

tinman22

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So 1428 is where ive landed. A shop recomendation is coming (for sleeving and decking) with the parts and depending on turn around time I will use that shop.

Prior to this I was looking around for machine work and found nothing that I would call acceptable. When I asked the shop I have been using for the last 15 years for all of my harley work about v-4 work his response was good luck.

Who does everybody use for their work? Are there any shops you wouldn't use?
 
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Fire-medic

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Recommended:
Sean Morley

PCW in Schenectady NY

Larry Fitzgerald of LCR Performance, Rochester NY

I have my own guys locally, but these are people who have great records of VMax work.
 

tinman22

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parts will be coming from sean but he was unable to do the work. He did recomend a shop in ny.

Most shops i spoke with were either unable or unwilling and also had no recomendations.
 

huw s

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It shouldn't be hard - if you have a liner set. A lot of work yes, and machining a v4 is way more time consuming than a straight4 - you not only have to bore the block, you also have to bore, then hone the block, as well as truing the top of the block. All I did with mine was to replace the liners and true the tops, with a clean-up hone to finish.
And if you're going oversize, you should also tidy up the ports - aka stage 1 gas flow and tidy up the valves?
 

tinman22

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I have access to equipment and Opposable thumbs unfortunatly I lack the experience.
and I only want it done once.

some things i can do some things i cant.

I can maintain a plane. Unfortunatly I missplace tools....I dont work on planes
 

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