I'm curious if anyone has ever put together a normally aspirated (NA) oversize VQ35. I've read through a lot of posts and searched, but never found anyone with either a bored or stroked NA motor.

Has anyone ever done it? ...any info on it?

 

Is this what you are looking for?

https://my350z.com/forum/tuning/303364-stroker-kits-for-n-a-application.html

 

I dont know of anyone that has of hand, but I know GTM sells stroker kits. You will just need to make sure you get the higher compression pistons.

 

Yes, that thread was also asking if there were any NA stroker motors running. There were not at that time.

The only person I've heard about building an NA stroker is kwame@z1. He was hoping to be finished in late January, so he should be pretty close by now. Maybe he'll pop in here and give us an update.

 

Kwame from Z1Performance is doing a 4.15 liter high compression N/A build.

 

Sub'ing for answers/ info also. BTW, Hows its going JB? Long time no see...

 

I went with a 100mm bore and an 86.4mm stroke. The delay in this project has been due to me reorganizing some priorities with the entire build of this car. I will be ordering a few more parts soon and I shall have the motor completed rather shortly.

Our engine builder actually has informed me that its taken him a lengthy amount of time just to bore out everything to spec. He calls me regularly to give me updates on how much aluminum is on his shop floor.

 

how much whp are you wantin anyhow Kwame? 340-350 whp? where's it revving to and what cams are ya runnin?

 

Hi Jordan... Yes, it's been a while... since the last races in Bradenton, I think.

I'm still thinking about building an NA stroker motor, but I don't necessarily want to be a pioneer... they're the guys with arrows in their backs.

I just have this feeling that once someone builds an NA 4.15L or 4.2L motor they will become very popular. It would have to be a blast to drive... I'm just trying to get information, too...

 

Why didn't you go with the 88mm stroke crankshaft? More grinding on the block, I guess.

Does the 86.4mm stroke let you keep the oil squirters?

Haha... Those guys are never happy...

 

That sounds pretty nice there. I would love to do a big stroker motor myself, I think im going to hold off tho until we hear further information on the VK56 swap that JT is doing.

 

I lied, I just checked the invoice and it is an 88mm stroke crank. Oil squriters were ditched. I am unsure as to whether or not the 86.4mm stroke allows you to retain the factory oil squirters.

Edit: From their website:

 

***Disclaimer, this is based on discussions we have had with our engine builder and not based on actual data as the motor is not completely assembled***

The exact phrase our engine builder used when referring to how much estimated whp was "substantially more than Adam's" . He also said that I should be redlining approximately 1k lower than Adam's motor as my motor will not need high revs in order to make power. As a matter or fact my motor will probably make less than optimal power at higher revs (8K+). I choose Tomei 280s for my Cam selection.

 

hahaha so substantially is like...15%...lol and way more torque. kinda figured you wouldnt be able to make it run to 8400 with the longer stroke but yeah, that thing will be a blast to drive and at 4.2 liters with 280 degree cams...it'll sound like a racer ^_^ runnin tighter gears out back?

 

4.083 at Least

 

lol can you go any tighter than 4.08?

 

 

whaaaaaaaa!? lol if its not revvin to 8400 I wouldnt go much higher...Adam might be well served by some 4.3/4.5 gears...but if youre only goin to 7500...lol