Page Options
You are here : Magazine Articles
  Minimize
30

The Dog II Nissan Sentra

The Dog II

By Sarah Forst and Mike Kojima

Photography by Jeff Naeyaert & Steve Mitchell

Racing, performance, Nissan Sentra and basket case are not words that usually go together. This is a story of how a sophisticated race car was built from a pile of parts with a double dose of hard work and intestinal fortitude.

Dog II Nissan Sentra

The story starts when a 1998 B14 Nissan Sentra race car was purchased from a US Touring car team by NASA racer Tony Guardado. The car went on to be developed into the well known successful NASA and Time Attack racer known as the Dog Car that Mike Kojima successfully campaigned for many years.  The Dog Car became a media star appearing in scores of magazines from Grassroots Motorsports to Super Street.  In fact the Dog Car had the unusual distinction of being featured in every single publication that covered the compact car market at the time, with multiple appearances in some.

When the Dog Car was purchased it came with an ample pile of spares including a pristine factory fresh body shell and nearly enough parts to build another car. The Dog Car had many non-correctable issues with the previous team's chassis fabrication that hampered its competitiveness, so it was decided to build a new car. Dog II would be built from the ground up using the backup shell and spares from the first car.

Although the concept seemed simple, Tony embarked on the buildup that was to take 18 months and a considerable about of work. At the start of the project, the parts pile was shipped off to Technosquare in Torrance California, one of the best race prep/fabrication houses in Southern California. Ritchie and Howard Watanabe of Technosquare shook their heads in dismay when looking at the pile then dug in and went to work. The first job was to assess what was needed and to obtain all of the little parts that were missing to piece together a running car. A multi-page list of nearly a hundred items was complied and sent off to Nissan Motorsports. Even with Nissan’s special racer contingency pricing, the list ended up being over three thousand dollars. Lesson learned, it is sometimes better to start with a compete car.

Dog II SR20VE engine

This is no show car. Despite the lack of chrome, polishing and powdercoating, a lot of serious hardware lives here. A SR20VE engine sports an N1 intake manifold, throttle body, custom air intake with a big Cobra MAF and a custom fabbed 321 stainless header. A Setrab oil cooler lives to the right of the big Koyo racing radiator. A self draining breather box returns all oil blowby back to the sump. The clean aluminum triangulated brace bolts to the shock towers and an extension to the main rollcage for maximum stiffness. All oil is plumbed with Earls aircraft spec AN hardware. Coolent flows through G-Spec hoses.

Next, a fresh JDM SR20VE engine was obtained from an engine importer. The SR20VE is a high-performance variant of the venerable SR20DE that was never imported to the US. The VE features a higher flowing cylinder head, higher compression and most importantly a sophisticated variable valve timing system with high- and low-rpm lobes, much like Honda’s VTEC system. The VE was found on the Japanese Primera and Bluebird models. The reason why this engine was never offered here was probably due to decisions made by the same brilliant enthusiast hating executives at Nissan North America who decided not to import the S15, put the KA24 truck motor into the 240SX, the QR25DE engine into the Sentra SE-R and allowed the hideous B16 Sentra to make it into production.

Pages: 1 of 6 Next Page

Comments

Big J
# Big J
Wednesday, December 23, 2009 10:41 AM
the oil separator, return, and crank vent is ingenious.
jahviid
# jahviid
Wednesday, December 23, 2009 11:20 AM
big up mike the ultimate sentra machine nissan forever and always.love the setup mikey with the vvl sr20
jahviid
# jahviid
Wednesday, December 23, 2009 11:29 AM
mike this car is well build trust me would love to test this car on a track mike job well done.
Steve
# Steve
Wednesday, December 23, 2009 11:58 AM
Mike that header is beyond a work of art, what a beautiful piece! I want one! :)
Lol "Hideous B16" could not have said it better myself!
dj06482
# dj06482
Wednesday, December 23, 2009 1:32 PM
Beautiful work, one of the best-thought-out racecars that I've ever seen! Thanks for sharing!
urbanjacup
# urbanjacup
Thursday, December 24, 2009 7:02 AM
"Although some might call this ricey, it’s all 100% function and will kick your ass." ...nasty...
Wrecked
# Wrecked
Thursday, December 24, 2009 3:45 PM
Was an edited version of this article printed in SCC once or is it a totally different article?

Mike what's your opinion of this:

http://www.formulastudent.de/academy/pats-corner/advice-details/article/pats-column-rod-ends-in-bending/

Mike Kojima
# Mike Kojima
Thursday, December 24, 2009 11:26 PM
It was a much shorter version.
Mike Kojima
# Mike Kojima
Thursday, December 24, 2009 11:31 PM
I agree and I think its not ideal so I use a rod end with rating high enough for a safety factor of about 4x the calculated max load.
Wrecked
# Wrecked
Friday, December 25, 2009 6:18 AM
Is it typical that you write these detailed articles and the editors condnese them down so much?
Mike Kojima
# Mike Kojima
Saturday, December 26, 2009 12:02 AM
Once SCC started to suck and they reduced page count, yes.
BenFenner
# BenFenner
Saturday, December 26, 2009 11:32 AM
Just like Big J, I too find myself loving the well-thought-out oil separator. I've been tossing ideas back an forth in my head as to what I'm going to do about mine, and custom can + large hoses + self draining were all on my list. Great job!


As for the Nismo wheel studs. I ask you to read through this and consider other options if deemed necessary. Andreas Miko and I go back and forth about the Nismo studs' strength and failure rate. Post #34 also has a link to the Fresh Alloy forums where many members there report problems with them.
http://www.sr20-forum.com/suspension/13333-arp-extended-studs.html

Mike Kojima
# Mike Kojima
Sunday, December 27, 2009 8:07 PM
Wow you sheared 20 studs! We have them on 3 of our cars and have never had any trouble although I did break one stock stud once on my SSB SE-R way back in the day.
BenFenner
# BenFenner
Monday, December 28, 2009 12:36 PM
It was the most ridiculous thing I'd ever experienced. Every couple of months, like clockwork, I'd sheer one. This went on for years even on the rear when I had no spacers. I never sheered a stock stud under the same exact conditions.

There's no way I'd trust my lap times, let alone my life, to Nismo wheel studs.
Eric Hsu
# Eric Hsu
Tuesday, January 05, 2010 12:29 AM
Mike is this the Dog car that you, Steve (in his 350), and me (in my S13) were smoking the shit out of everybody in that one day at Streets of Willow?
Mike Kojima
# Mike Kojima
Saturday, January 09, 2010 12:08 PM
No this is the Dog II, a car 100% built by me with the heavy fab being done by the Bros at Technosquare and the cosmetic stuff being done by Kono.

The original Dog Car is pretty fast and well developed by me but it has many issues like a screwed up and heavy cage and improper structural gutting that messes it up that were done by the previous owners.

At industry day the Dog II lapped big Willow at about 1.3-1.5 seconds a lap faster and I am rusty and not driving well. This is without me adjusting anything and no dial in.

There is an easy couple of seconds left in the car.
nickgomez
# nickgomez
Wednesday, January 13, 2010 1:57 AM
Long live THE DOG!
Merritt
# Merritt
Friday, February 12, 2010 11:53 AM
Good to see that Dog Car II is finally able to come out an play!
Steve
# Steve
Friday, February 12, 2010 1:53 PM
Mike, can you tell us what specific capacity/model Setrab cooler was used? If not, rule of thumb for sizing an oil cooler with VE? I feel like taking a VE out on the track even with a Koyo isn't enough even for HPDE's, it's just asking for trouble w/o an oil cooler, or at least asking to have to dial it back and pit to allow the car to cool.

Thanks in advance!
Steve
# Steve
Friday, February 12, 2010 1:57 PM
Sorry I should have said Mike OR Sarah =:o. Sorry!
Mike Kojima
# Mike Kojima
Friday, February 12, 2010 2:48 PM
I think its a 13 row 119 or 121 I forget exactly, I think the heat rejecting capacity is 20k btu.

My scientific method for calculating what capacity cooler I needed was.... The biggest thing that could package easily! On all but the hottest days the oil temp stays below 230 degrees.
Julian ITR
# Julian ITR
Wednesday, November 16, 2011 7:57 PM
sorry to nitpick, but the EK9 Civic Type R used a B16B engine, not a B16A :) the B16B is more similar to the Integra Type R's B18C engine, I think it is in fact a B18C with shorter stroke.

Post Comment

Only registered users may post comments.

          MotoIQ Proudly Presents Our Partners:


Copyright 2012 by MotoIQ.com
Privacy StatementTerms Of UseAdvertise