VQ35DE Build
09-15-2014, 12:06 PM
#1
VQ35DE Build
Hey guys, first post on this forum, new to the VQ engines but I've built 350sbc's before and an m50 from an e36. I am a service-member in the Army serving overseas, I have no car over here and no projects to work on so I'm going insane as go-karts are the only wheeled vehicles sustaining my sanity.
Goals: My goal is to make around 300rwhp NA(obviously why im posting here
) I also want a Hi-Revving motor aiming for a 8k redline and it needs to be reliable/bulletproof. (I know this is a tall order)
Money: Not a problem, I know its expensive and tough to make NA power on these motors and if I go FI Ill save money and have gobbs of power blah blah, save it for somebody else please.
Plan: rebuilding heads. Honing the block, Eagle Rods, ARP hardware, Weisco 11:1 95.5mm pistons. Tomei 272/11.3in/11.0ex cams, JWT springs.
Supporting Mods:
Rev-up oil pump
DC Headers
HKS Exhaust
Plenum spacer
JWT Pop-Charger
Ltw flywheel
Testpipes
As of 11/4/2015:
Car currently in Italy. Contemplating a custom tune; but resources and communication are a problem here in Italy. Need to find an UPREV tuner here. Ive had about four E-Tunes through Uprev and she runs very nicely for now. I know there is more power left on the table. Injector duty cycle is around 90-95 percent currently so hopefully that means im making decent power. Wideband is around 13 WOT. Still have to install/Rescale tune for 4" MAF and intake piping.
Goals: My goal is to make around 300rwhp NA(obviously why im posting here
) I also want a Hi-Revving motor aiming for a 8k redline and it needs to be reliable/bulletproof. (I know this is a tall order) Money: Not a problem, I know its expensive and tough to make NA power on these motors and if I go FI Ill save money and have gobbs of power blah blah, save it for somebody else please.
Plan: rebuilding heads. Honing the block, Eagle Rods, ARP hardware, Weisco 11:1 95.5mm pistons. Tomei 272/11.3in/11.0ex cams, JWT springs.
Supporting Mods:
Rev-up oil pump
DC Headers
HKS Exhaust
Plenum spacer
JWT Pop-Charger
Ltw flywheel
Testpipes
As of 11/4/2015:
Car currently in Italy. Contemplating a custom tune; but resources and communication are a problem here in Italy. Need to find an UPREV tuner here. Ive had about four E-Tunes through Uprev and she runs very nicely for now. I know there is more power left on the table. Injector duty cycle is around 90-95 percent currently so hopefully that means im making decent power. Wideband is around 13 WOT. Still have to install/Rescale tune for 4" MAF and intake piping.
Last edited by thekyledeg; 11-04-2015 at 08:38 AM.
09-15-2014, 02:00 PM
#2
I'm in the same boat as you except I'm a live long Ford guy.
I'm pretty much building the same engine as you, and so far have.
Weisco 11:1 pistons .020. [yes, block will have to be bored]
ARP main cap bolts [I will have to plastigauge everything to make sure I don't have to line hone the mains]
I've ported the DE heads.
JWT, S1 cam.260 DEG DUR. / .428"(10.9MM) LIFT
Valve springs that match the cam.
Rev up oil pump
ARP rod bolts [would like to have the Eagle rods, but for both our hp needs I think we can spend the extra $500 elsewhere..]
SRP headers [I'm building my engine for an Altima SE-R]
And, maybe a home built intake [depends on the time factor].
The only question I'm trying to find is what size are the stock head bolts? I hate the torque to yield bolts [yes I do know how wonderful they are, but I still don't want them]
I plan to buy the same size head bolts in a grade 8, just not torque to yield, this is if I can find out the size and pitch of the stockers.
Throttle body? I don't know yet. My stock tb is 70mm so I can't see spending $$$$ for only 5mm more.
I wonder if there is a way to gut the stock tb, and take the gears/solenoid over to a bigger cable controlled tb.
I'm pretty much building the same engine as you, and so far have.
Weisco 11:1 pistons .020. [yes, block will have to be bored]
ARP main cap bolts [I will have to plastigauge everything to make sure I don't have to line hone the mains]
I've ported the DE heads.
JWT, S1 cam.260 DEG DUR. / .428"(10.9MM) LIFT
Valve springs that match the cam.
Rev up oil pump
ARP rod bolts [would like to have the Eagle rods, but for both our hp needs I think we can spend the extra $500 elsewhere..]
SRP headers [I'm building my engine for an Altima SE-R]
And, maybe a home built intake [depends on the time factor].
The only question I'm trying to find is what size are the stock head bolts? I hate the torque to yield bolts [yes I do know how wonderful they are, but I still don't want them]
I plan to buy the same size head bolts in a grade 8, just not torque to yield, this is if I can find out the size and pitch of the stockers.
Throttle body? I don't know yet. My stock tb is 70mm so I can't see spending $$$$ for only 5mm more.
I wonder if there is a way to gut the stock tb, and take the gears/solenoid over to a bigger cable controlled tb.
09-16-2014, 02:16 AM
#4
Here's a thread for your reference. Not exactly the same engine but you can learn a lot from this build:
https://my350z.com/forum/na-builds/5...we-did-it.html
https://my350z.com/forum/na-builds/5...we-did-it.html
The following users liked this post:
StefanThePro (09-25-2017)
09-16-2014, 07:26 AM
#5
Here's a thread for your reference. Not exactly the same engine but you can learn a lot from this build:
https://my350z.com/forum/na-builds/5...we-did-it.html
https://my350z.com/forum/na-builds/5...we-did-it.html
09-16-2014, 08:00 AM
#6
I strongly suggest you to follow Sasha's build.
If you aren't going ITB, let me know as I'm doing soon a run on Sasha's upper plenum that he was capable to d 345+whp.
but this needs a 90mm TB
2TW PWR is only capable to do about 315 with that same engine but with a 75mm TB and a slightly smaller exhaust ( 3.5'' vs 3.0'' )
https://my350z.com/forum/na-builds/5...5de-32-hp.html
If you aren't going ITB, let me know as I'm doing soon a run on Sasha's upper plenum that he was capable to d 345+whp.
but this needs a 90mm TB
2TW PWR is only capable to do about 315 with that same engine but with a 75mm TB and a slightly smaller exhaust ( 3.5'' vs 3.0'' )
https://my350z.com/forum/na-builds/5...5de-32-hp.html
09-16-2014, 03:43 PM
#7
https://my350z.com/forum/na-builds/5...rods-take.html
I think the rods can hold the power, and rpms, but I've bought some ARP rod bolt for a little extra security. Were I going to do a forced induction engine making over 400hp I would go ahead, and buy the Eagle rods, but for what you, and I are going to be doing I think the stock rods should hold up.
Also, in OPsash's build he is using stock 3.7 rods, can anyone post a pic of those rods as I did an image search, and wasn't able to find anything.
Since OPsash is making more power than me, I would like to see the stock rods to compare them to the 3.5de rods. Also, does anyone know if the rod bolts on the 3.7 are the same size as the 3.5 [as far as diameter, not length].
Last edited by M-train; 09-16-2014 at 03:49 PM.
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09-16-2014, 05:02 PM
#8
I made a post here on that same subject.
https://my350z.com/forum/na-builds/5...rods-take.html
I think the rods can hold the power, and rpms, but I've bought some ARP rod bolt for a little extra security. Were I going to do a forced induction engine making over 400hp I would go ahead, and buy the Eagle rods, but for what you, and I are going to be doing I think the stock rods should hold up.
Also, in OPsash's build he is using stock 3.7 rods, can anyone post a pic of those rods as I did an image search, and wasn't able to find anything.
Since OPsash is making more power than me, I would like to see the stock rods to compare them to the 3.5de rods. Also, does anyone know if the rod bolts on the 3.7 are the same size as the 3.5 [as far as diameter, not length].
https://my350z.com/forum/na-builds/5...rods-take.html
I think the rods can hold the power, and rpms, but I've bought some ARP rod bolt for a little extra security. Were I going to do a forced induction engine making over 400hp I would go ahead, and buy the Eagle rods, but for what you, and I are going to be doing I think the stock rods should hold up.
Also, in OPsash's build he is using stock 3.7 rods, can anyone post a pic of those rods as I did an image search, and wasn't able to find anything.
Since OPsash is making more power than me, I would like to see the stock rods to compare them to the 3.5de rods. Also, does anyone know if the rod bolts on the 3.7 are the same size as the 3.5 [as far as diameter, not length].
He is using the HR rods with the VHR crank and using custom piston from JWT.
both VHR & HR rods can be interchanged but they dont have the same length thus why he require a special custom piston that JWT provide.
DE is weak and you shouldn't even think about them !
Last edited by XChacalX; 09-16-2014 at 05:15 PM.
09-16-2014, 08:59 PM
#10
350Z-holic
iTrader: (13)
Ignorance is a state of being uninformed (lack of knowledge).[1] The word ignorant is an adjective describing a person in the state of being unaware and is often used as an insult to describe individuals who deliberately ignore or disregard important information or facts. Ignoramus is commonly used in the US, the UK, and Ireland as a term for someone who is willfully ignorant. Ignorance is distinguished from stupidity, although both can lead to "unwise" acts.
Post Script - I'm not trying to insult you as referred to above...I'm interested in your build, thankful that you are serving/protecting our country and jealous of the italian go-kart scene (I just sold two IAME 100cc engines).
M11x1.25
Post Script - I'm not trying to insult you as referred to above...I'm interested in your build, thankful that you are serving/protecting our country and jealous of the italian go-kart scene (I just sold two IAME 100cc engines).
M11x1.25
Last edited by bealljk; 09-16-2014 at 09:05 PM.
10-02-2014, 08:53 AM
#12
Ignorance is a state of being uninformed (lack of knowledge).[1] The word ignorant is an adjective describing a person in the state of being unaware and is often used as an insult to describe individuals who deliberately ignore or disregard important information or facts. Ignoramus is commonly used in the US, the UK, and Ireland as a term for someone who is willfully ignorant. Ignorance is distinguished from stupidity, although both can lead to "unwise" acts.
Post Script - I'm not trying to insult you as referred to above...I'm interested in your build, thankful that you are serving/protecting our country and jealous of the italian go-kart scene (I just sold two IAME 100cc engines).
M11x1.25
Post Script - I'm not trying to insult you as referred to above...I'm interested in your build, thankful that you are serving/protecting our country and jealous of the italian go-kart scene (I just sold two IAME 100cc engines).
M11x1.25
XChacalX,
I was planning on fabricating something similar to sashas 345 whp build intake plenum along with a spacer, if I can fit a spacer in. What type of metal is the upper intake plenum made out of?
10-02-2014, 05:02 PM
#15
Registered User
I strongly suggest you to follow Sasha's build.
If you aren't going ITB, let me know as I'm doing soon a run on Sasha's upper plenum that he was capable to d 345+whp.
but this needs a 90mm TB
2TW PWR is only capable to do about 315 with that same engine but with a 75mm TB and a slightly smaller exhaust ( 3.5'' vs 3.0'' )
https://my350z.com/forum/na-builds/5...5de-32-hp.html
If you aren't going ITB, let me know as I'm doing soon a run on Sasha's upper plenum that he was capable to d 345+whp.
but this needs a 90mm TB
2TW PWR is only capable to do about 315 with that same engine but with a 75mm TB and a slightly smaller exhaust ( 3.5'' vs 3.0'' )
https://my350z.com/forum/na-builds/5...5de-32-hp.html
Last edited by The_Assassin; 10-02-2014 at 05:09 PM.
10-09-2014, 11:34 AM
#16
Just an update, Heads are in the mail along with Tomei 272/11.3 cams, and JWT valve springs, and Viton valve stem seals. Ill update with pictures and progress along the way, full head dissemble/ and a little port matching and polishing to come! Still cant decide on exhaust options(headers specifically) 370z headers vs. DC sports or a better option? I need to be able to swap cats in for inspection, anybody have suggestions.
Last edited by thekyledeg; 01-03-2015 at 08:24 AM.
10-18-2014, 03:23 AM
#20
first head came in today, still waiting on my spring compressor to get in the to install the JWT spring kit. In the meanwhile time to clean up and put a polish on the combustion chamber to *try* and keep some carbon from building up for awhile... and just to kill time mostly.
Buckets and cam keepers removed
As the head came,... with leaky valves already.. hmmm.
cleaning and polishing the old head gasket, oxidation and carbon off the sealing surface. I like to use brass dremel brushes for this.
cleaning the combustion chambers
getting ready to be polished
Buckets and cam keepers removed
As the head came,... with leaky valves already.. hmmm.
cleaning and polishing the old head gasket, oxidation and carbon off the sealing surface. I like to use brass dremel brushes for this.
cleaning the combustion chambers
getting ready to be polished
Last edited by thekyledeg; 10-21-2014 at 10:49 AM.